a A population has a mean of 159.8 kg and a standard deviation of 12.6 kg. Under these circumstances, what z-score correspond to a mass of 148.3 kg? Oz = -1.06 z = -0.91 Oz = -0.85 Oz = 0.91
Answers
The z-score corresponding to a mass of 148.3 kg is approximately -0.91.
Z-score is a statistical measurement that describes a value's relationship to the mean of a group of values. Z-score is measured in terms of standard deviations from the mean. If a Z-score is 0, it indicates that the data point's score is identical to the mean score.
A population has a mean of 159.8 kg and a standard deviation of 12.6 kg. To find the z-score corresponding to a mass of 148.3 kg, use the formula: z = (X - μ) / σ, where X is the value (148.3 kg), μ is the mean (159.8 kg), and σ is the standard deviation (12.6 kg).
z = (148.3 - 159.8) / 12.6
z = -11.5 / 12.6
z ≈ -0.91
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Related Questions
If something has a 0.35% chance to occur every 5 minutes how long will it take for it to be guaranteed
Answers
Answer:
Never
Step-by-step explanation:
After 5 minutes the chance is .35%
After 10 minutes the chance remains .35%
You can't add chances, like flipping a coin, the chance is not dependent of the previous outcome, just because you got heads the first time doesn't mean you'll get tails the second time even.
Answer:
It will never be guaranteed.
Step-by-step explanation:
Chance cannot be added, and chance will remain at 0.35% forever
14
Jose has six and three-fourths cups of potato salad. Jose GIVES his friend three and one-third
cups of potato salad. How many cups of potato salad does Jose HAVE LEFT
(5 Points)
63-35
Answers
Jose is left with 3 5/12 cups of potato salad as he gave 3 1/3 cup to his friend out of 6 3/4 cup of salad he was having initially.
What is fraction?A fraction is a portion of a whole or, more broadly, any number of equal pieces. In ordinary English, a fraction represents the number of pieces of a specific size, such as one-half, eight-fifths, or three-quarters. A fraction is a portion of a larger total. The number is stated in arithmetic as a quotient, which is the numerator divided by the denominator. Both are integers in a simple fraction. A complicated fraction contains a fraction in either the numerator or the denominator.
Here,
Quantity of potato salad jose have=6 3/4 cup
=27/4 cup
Quantity of potato salad jose gave to his friend=3 1/3 cup
=10/3 cup
Quantity of potato salad jose have now,
=6 3/4-3 1/3
=27/4-10/3
LCM of 3,4=12
=(81-40)/12
=41/12
=3 5/12 cup of potato salad
Jose is left with 3 5/12 cups of potato salad after giving 3 1/3 cup to his friend out of the original 6 3/4 cup.
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Classify the number. Check all that apply.
-V16
Whole
Integer
Real
Irrational
Rational
O Natural
Answers
Need help with #6 don’t know how to find truth values.
Answers
The statement p is: Saturn is a planet.
The statement q is: Hong Kong is a city.
Now the first part of our composite proposition is:
\(p\lor\sim q\)This means that we have to negate the statement q, this would be: Hong Kong is not a city.
Now we make the disjunction between the statement p and the negation of q, then we have:
\(p\lor\sim q\text{ means: Saturn is a planet or Hong Kong is not a city}\)The second part of our composite porposition is:
\(\sim p\wedge q\)This means that we have to negate the statement p, then we have: Saturn is not a planet. Then we make the conjunction between the negation of p and q, then we have:
\(\sim p\wedge q\text{ means: Saturn is not a planet and Hong Kong is a city}\)Finally we make the disjunction between the statements discussed so far, hence the statament
\((p\lor\sim q)\lor(\sim p\wedge q)\)means:
Saturs is a planet or Hon kong is not a city OR Saturn is not a planet and Hong Kong is not a city.
Now, to determine the truth value of the composite proposition we have to remember that a disjunction is TRUE if one of the statements that make it is true and that the conjunction is TRUE only if both stataments that make it are true.
The first statement is: Saturn is a planet or Hong kong is not a city. Since this is a disjunction and the statement Saturn is a planet is TRUE, then the proposition is true.
The second statement is: Saturn is not a planet and Hong Kong is not a city. Since this is a conjunction and the statement Saturs is not a planet is FALSE, the the second statement is FALSE.
Now since the composite statemtent is made of a TRUE and a FALSE statement and it is a disjunction we conclude that the truth value of the statement given is TRUE.
Comparing Perimeter and Area
Compare the perimeter and area of the original figure to
the perimeter and area of the reduced figure using the
scale factor
Which statements are true about the comparison
between the two figures? Check all that apply.
The scale factor is 2.
The scale factor is
2.
6
The perimeter of the model is the product of the
scale factor and the perimeter of the original
rectangle
The area of the reduced figure is half the area of
the original figure
1
The area of the reduced figure is
times the
3
area of the original figure,
Intro
Done
Answers
Can someone help me ASAP!!
WILL MARK YOU BRAINLIEST!!!!!!!!!!!
Answers
Answer:
I’m pretty sure that #1 is D because their are 4 different degrees making it a quadratic
Step-by-step explanation:
Two cars travel at the same speed to different destinations. Car A reaches its destination in 12 minutes. Car B reaches its destination in 18 minutes. Car B travels 4 miles farther than Car A. How fast do the cars travel? Write your answer as a fraction in simplest form.
Answers
Answer:
chatGPT
Step-by-step explanation:
Let's denote the speed of each car as v, and the distance that Car A travels as d. Then we can set up two equations based on the information given:
d = v * (12/60) (since Car A reaches its destination in 12 minutes)
d + 4 = v * (18/60) (since Car B travels 4 miles farther than Car A and reaches its destination in 18 minutes)
Simplifying the equations by multiplying both sides by 60 (to convert the minutes to hours) and canceling out v, we get:
12v = 60d
18v = 60d + 240
Subtracting the first equation from the second, we get:
6v = 240
Therefore:
v = 240/6 = 40
So the cars travel at a speed of 40 miles per hour.
B = <37, -50>
Magnitude = ?
Direction = ?
Answers
Answer:
magnitude = -87
direction = 53.50°
Step-by-step explanation:
magnitude is the distance between the initial point and the end point,
magnitude = -50 - 37 = -87
direction, tan ∅ = y / x
tan ∅ = -50/37
∅ = tan¬ -50 / 37
where¬ symbol stands for tan inverse
∅ = -53.50
thus direction = 53.50°
Which of the following correlation coefficients represents the strongest relationship between two variables? -.75 +.60 .00 +.30
Answers
The correlation coefficient that represents the strongest relationship between two variables is -0.75.
In correlation coefficients, the absolute value indicates the strength of the relationship between variables. The strength of the association increases with the absolute value's proximity to 1.
The maximum absolute value in this instance is -0.75, which denotes a significant negative correlation. The relevance of the reverse correlation value of -0.75 is demonstrated by the noteworthy unfavorable correlation between the two variables.
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to evaluate which of a set of curves fits the data best, we can use: a. APE b. MAPE c. R2 d. NPV
Answers
To evaluate which of a set of curves fits the data best, you can use the option "c. R2", also known as the coefficient of determination.
R2 is a statistical measure that helps determine the proportion of variance in the dependent variable explained by the independent variable(s) in the regression model. It ranges from 0 to 1, with higher values indicating a better fit of the curve to the data.
To evaluate which of a set of curves fits the data best, we can use the R2 (coefficient of determination) metric. R2 is a statistical measure that represents the proportion of the variance in the dependent variable that is explained by the independent variable(s) in a regression model.
A higher R2 value indicates a better fit of the curve to the data. APE (absolute percentage error), MAPE (mean absolute percentage error), and NPV (net present value) are not appropriate metrics for evaluating the fit of a curve to data. APE and MAPE are typically used to measure forecasting accuracy, while NPV is a financial metric used to determine the present value of future cash flows.
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Y = -(X +5) + X +4 if X = -4, Y = ?
Answers
Answer:
y=-1
Step-by-step explanation:
A recipe calls for 1 1/2 teaspoons of cinnamon to make 2 dozen oatmeal cookies how many teaspoons of cinnamon are needed to make 60 oatmeal cookies
Answers
Answer:
c
Step-by-step explanation:
system of equations generates two lines that intersect at the point (7,−3)?
Answers
Get the two equations for the lines into slope-intercept form. ...
Set the two equations for y equal to each other.
Solve for x. ...
Use this x-coordinate and plug it into either of the original equations for the lines and solve for y.
please help!!!!!(i don't know what else to write so)
Answers
Answer:
A
Step-by-step explanation:
sorry if its wrong but i think its right
ANSWER THIS ASAP PLS!!!
Solve for x.
A) -11
B) -12
C) -6
D) 11
Answers
Answer:
its A, B, C, or D
Step-by-step explanation:
You purchased a home this year for $315,000. You applied for homestead exemption and were able to take off $50,000 of the appraised value for taxes. The taxes in your county are 1.22%. How much do you have to pay in property taxes?
Answers
You have to pay $3,233 in property taxes.
To calculate the property taxes you have to pay, we need to first find the assessed value of your home after the homestead exemption.
Assessed value = Appraised value - Homestead exemption
Assessed value = $315,000 - $50,000
Assessed value = $265,000
Now, we can calculate the amount of property taxes you have to pay using the tax rate of 1.22%:
Property taxes = Assessed value x Tax rate
Property taxes = $265,000 x 0.0122
Property taxes = $3,233
Therefore, you have to pay $3,233 in property taxes.
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What is the ratio of the area of sector abc to the area of sector dbe? a. b. c. d. e.
Answers
The ratio of the area of sector abc to the area of sector dbe is 4/3
How to determine the ratio of the areas?For sector abc, we have:
Angle = x
Radius = 2r
For sector dbe, we have:
Angle = 3x
Radius = r
The area of a sector is:
\(Area =\frac{\theta}{360}* \pi r^2\)
So, we have:
\(ABC =\frac{x}{360}* \pi (2r)^2\)
Evaluate
\(ABC =\frac{x* \pi r^2}{90}\)
For DBE, we have:
\(DBE =\frac{3x}{360}* \pi (r)^2\)
Evaluate
\(DBE =\frac{x}{120}* \pi r^2\)
The ratio of both areas is:
\(Ratio = \frac{x}{90}* \pi r^2 : \frac{x}{120}* \pi r^2\)
Cancel out the common factors
\(Ratio = \frac{1}{90} : \frac{1}{120}\)
Express as fraction
\(Ratio = \frac{120}{90}\)
Divide
\(Ratio = \frac{4}{3}\)
Hence, the ratio of the area of sector abc to the area of sector dbe is 4/3
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4/3
its the answer edmentum
Simplify completely: 9 - 4(5x - 6)
Answers
Answer: 20x - 33
Step-by-step explanation:
The equation is: \(9 - 4(5x - 6)\)
First, we must use the distributive property by taking -4 and multiplying it through the parentheses. For example,
\(-4* 5x = -20x\\-4* (-6) = 24\)
so, this will become = 9 - 20x + 24
2. Next, since everything has been distributed; we will add 9 + 24, in order to simplify it completely.
\(9 + 24 = 33\)
3. Finally, we have simplified the equation completely. The final answer become:
\(20x-33\)
Which equation does the graph below represent?
A coordinate grid is shown. The x axis values are from negative 5 to positive 5 in increments of 1 for each grid line, and the y axis values are from negative 20 to positive 20 in increments of 4 for each grid line. A line is shown passing through the ordered pairs negative 4, 16 and 0, 0 and 4, negative 16.
y = fraction 1 over 4x
y = 4x
y = fraction negative 1 over 4x
y = −4x
Answers
Answer:
The answer is D!! Trust me I have took this quiz and got it right.
Step-by-step explanation:
Have a good time on your test!
Answer:
The answer is B! trust me
Step-by-step explanation:
Find any points of discontinuity for the rational function. y=(x+3)(x-5)(x+7)/(x+1)(x+4)
Answers
Points of discontinuity for the rational function y=(x+3)(x-5)(x+7)/(x+1)(x+4) are x = -1 and x = -4.
A rational function is a function that can be expressed as the ratio of two polynomial functions. In the case of the given rational function y=(x+3)(x-5)(x+7)/(x+1)(x+4), the numerator is a polynomial of degree 3, and the denominator is a polynomial of degree 2.
To find any points of discontinuity for a rational function, we need to determine where the denominator is equal to zero. Division by zero is undefined, so any value of x that makes the denominator equal to zero will be a point of discontinuity for the function.
In this case, we set the denominator (x+1)(x+4) equal to zero and solve for x:
(x+1)(x+4) = 0
This equation is true if either (x+1) = 0 or (x+4) = 0. So we have two solutions:
x+1 = 0 or x+4 = 0
x = -1 or x = -4
These values of x make the denominator of the function equal to zero, which means that the function is undefined at these points. These points are known as vertical asymptotes of the function, since the function approaches infinity as x approaches these points from either side.
It's important to note that the numerator of the function does not affect the points of discontinuity, since it is always defined for any value of x. Therefore, the points of discontinuity only depend on the denominator of the function.
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A triangle has angles that measure 52.4 and 16.4. Which equation can be used to find the value of x, the third measure of the triangle?
Answers
If a triangle has angles that measure 52.4 and 16.4, then the equation which can be used to find the value of x, the third measure of the triangle is x = 180 - (52.4 + 16.4)= 111.2°.
To find the value of x, follow these steps:
The sum of all angles of a triangle is equal to 180°. Therefore, we can find the third angle of the triangle by subtracting the sum of the two angles from 180°.To find the value of x, we need to subtract the sum of the angles 52.4° and 16.4° from 180°. ⇒x = 180 - (52.4 + 16.4) ⇒x = 180 - 68.8 ⇒x = 111.2°.Thus, the equation which can be used to find the value of x, the third measure of the triangle is: x = 180 - (52.4 + 16.4)= 111.2°.
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I need help with this .....
Answers
Answer:
6.5 hours
Step-by-step explanation:
hope this helped u bye
Someone help asap Ill give brainlest!
Answers
Answer:
y = -3x -2
Step-by-step explanation:
-2 is the y intercept
The reliability factor table provides factors for as many as
three computations when planning and evaluating the results of a
PPS sample. Describe in general terms each of these
computations
Answers
The three computations covered by the reliability factor table are sample size, index of reliability, and index of precision. Sample size deals with the size of the sample being used in order to achieve a desirable level of reliability.
Index of reliability is used to measure the consistency of results achieved over multiple trials. It does this by calculating the total number of items that contribute significantly to the final result. Finally, the index of precision measures the effect size of the sample, which is determined by comparing the results from the sample with the expected results.
The sample size computation gives the researcher an idea of the number of items that should be included in a sample in order to get the most reliable results. This is done by taking into account a number of factors including the variability of the population, the type of measurements used, and the desired level of accuracy.
The index of reliability is commonly calculated by finding the ratio of the number of items contributing significantly to the total result to the total number of items in the sample. This ratio is then multiplied by 100 in order to get a final score.
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Callie has 3,264 beads. She wants to divide the beads evenly to make 32 necklaces. How many beads will be
used for each necklace?
Answers
Answer:
102 beads will be used for each necklace.
Step-by-step explanation:
3,264/32=102
Oscar spent a weekend in Puerto Rico. He took 20 pictures of the rain forest, 20 pictures at the beach, and 20 pictures of a fort. Which multiplication expression shows how many pictures he took? Which addition expression shows how many pictures he took? How many total pictures did Oscar take?
Answers
Answer: A multiplication expression that shows how many pictures Oscar took is 3 x 20. An addition expression that shows how many pictures Oscar took is 20 + 20 + 20. The total number of pictures Oscar took is 60.
Step-by-step explanation: A multiplication expression is a way of showing repeated addition of the same number. For example, 3 x 20 means adding 20 three times: 20 + 20 + 20. This expression can be used to show how many pictures Oscar took because he took the same number of pictures (20) in three different places (rain forest, beach, fort). To find the total number of pictures, we can multiply 3 by 20 and get 60.
An addition expression is a way of showing the sum of two or more numbers. For example, 20 + 20 + 20 means adding 20 to itself two times and then adding the result to another 20. This expression can also be used to show how many pictures Oscar took because he took 20 pictures in each place and we can add them together. To find the total number of pictures, we can add 20 to itself three times and get 60.
The total number of pictures Oscar took is the same whether we use multiplication or addition, because these operations are related by the distributive property. This property states that a x (b + c) = a x b + a x c. For example, 3 x (20 + 20) = 3 x 40 = 120 and 3 x 20 + 3 x 20 = 60 + 60 = 120. In this case, we can use the distributive property to show that 3 x (20 + 20 + 20) = 3 x (60) = 180 and 3 x 20 + 3 x 20 + 3 x 20 = 60 + 60 + 60 = 180. Therefore, the total number of pictures Oscar took is equal to either expression: 60.
Hope this helps, and have a great day! =)
Answer:
multiplication expression is 3×20
addition expression is 20+20+20
tatal pictures is 60
A rectangular vegetable patch has a perimeter of 40 meters. Its area is 64 square meters. What are the dimensions of the vegetable patch?
Answers
The dimensions of the vegetable patch are 8 meters by 12 meters or 12 meters by 8 meters.
Let's assume the length of the vegetable patch is L and the width is W.
Given, the perimeter of the rectangular vegetable patch = 40 meters.
Perimeter = 2(L+W) = 40
Simplifying the above equation, we get
L+W = 20 (Equation 1)
Also, given that the area of the vegetable patch = 64 square meters.
Area = L*W = 64
From Equation 1, we can write W = 20-L
Substituting W in terms of L in the area equation, we get
L*(20-L) = 64
Expanding the above equation, we get
-L^2 + 20L - 64 = 0
Solving the quadratic equation, we get two possible values for L.
L = 8 or L = 12
If L = 8, then W = 20 - L = 12
If L = 12, then W = 20 - L = 8
Therefore, the dimensions of the vegetable patch are 8 meters by 12 meters or 12 meters by 8 meters.
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A wire 48 m long carries a current of 18 A from west to east.
Answers
Step-by-step explanation:
Given that,
The length of a wire, L = 48 m
Current in the wire, I = 18 A (west to east)
The magnetic field in the wire, B = \(8.3\times 10^4\ T\) (towards south)
The magnetic force acting on the wire is given by :
\(F=I(L\times B)\\\\F=48\cdot18\cdot8.3\cdot10^{-4}\ N\\\\F=0.71\ N\)
Using right hand rule, the direction of magnetic force is upwards.
when a coin is tossed three times, what is the probability that all three tosses are heads? the possible outcomes for the coin tosses are{hhh,ttt,htt,hht,thh,tth,hth,tht}
Answers
The probability of getting all three tosses to head is 1/8.
We have,
When a coin is tossed, there are two possible outcomes:
heads (H) or tails (T).
Since there are three tosses, the total number of possible outcomes.
2³ = 8.
The probability of getting heads on one toss is 1/2.
The probability of getting heads on all three tosses is the product of the probabilities of getting heads on each individual toss:
P(HHH) = P(H) x P(H) x P(H) = (1/2) x (1/2) x (1/2) = 1/8.
Therefore,
The probability of getting all three tosses to head is 1/8.
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A square pyramid has a volume of 297 cubed feet. The width and length of the pyramid are
both 9. feet. Find the height of the pyramid.
Answers
Answer:
11
Step-by-step explanation:
H =V/(LxW)/3
H = 297/(9x9)/3
H = 297/(81)/3
H = 297/27
H = 11
Therefore, the height of the pyramid is 11ft square