Dr. Snycerski computed a confidence interval for the mean number of alcoholic beverages consumed per week in a random sample of US college students. The 95% confidence interval is 3 to 6. What does this confidence interval tell us about the mean number of alcoholic beverages consumed per week by the population of all US college students

Answer:

-65 is the right answerrr

Approximately 99.7% of scores lie in the shaded region.

We have,

The empirical rule, also known as the 68-95-99.7 rule, provides an estimate of the percentage of scores that lie within a certain number of standard deviations from the mean in a normal distribution.

According to this rule:

Approximately 68% of scores lie within 1 standard deviation of the mean.

Approximately 95% of scores lie within 2 standard deviations of the mean.

Approximately 99.7% of scores lie within 3 standard deviations of the mean.

Now,

In the given scenario, the shaded region represents the area between -2 and 3 standard deviations from the mean on the x-axis.

This encompasses the area within 3 standard deviations of the mean.

And,

Since 99.7% of scores lie within 3 standard deviations of the mean, we can estimate that approximately 99.7% of scores lie in the shaded region.

Therefore,

Approximately 99.7% of scores lie in the shaded region.

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\(\text{One of the expressions can be the simplified version}\\\\\text{Simplify:}\\\\-f-5(2f-3)\\\\\text{Use the distributive property}\\\\-f-10f+15\\\\\text{Combine like terms}\\\\\boxed{-11f+15}\\\\\text{That expression is equivalent to the expression listed in the question}\)

Answer:

11f+5

Step-by-step explanation:

khan

The required parameters are missing :

Probable question with parameters :

Suppose we are interested in bidding on a piece of land and we know one other bidder is interested. The seller announced that the highest bid in excess of $10,000 will be accepted. Assume that the competitor’s bid x is a random variable that is uniformly distributed

between $10,000 and $15,000. a. Suppose you bid $12,000. What is the probability that your bid will be accepted?

Answer:

0.4

Step-by-step explanation:

Competitor's bid = 10,000 to 15000

Take the interval as:

a = 15,000 ; b = 20,000

f(y) =1/ interval difference = 1/(20000-15000) = 1/5000 = 0.0002

With a bid of 17000:

P(x < 17000 = ∫f(y) dy

∫0.0002dy = (0.0002x) at x = 17000 to x = 15000

0.0002(17000) - 0.0002(15000)

3.4 - 3

= 0.4

You can plug in your variables, of the variables you have are different.

Answer:

80%

Step-by-step explanation:

This is because if 60 cents is 60% of a dollar then 80 is 80% of a dollar. I got 80 because a dime is worth ten cents and 8 times 10 equals 80. so that would be 80%

The Pythagoras theorem states that in a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides.

From the given Pythagoras theorem above, the mathematical representation of the theorem would be written below as follows;

C² = a²+b²

Where:

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Answer:

C. 3 x 4

There's not really a way to explain it. If you still have questions, I would recommend asking your teacher or someone you can trust.

Answer:

1) y = -1

2) y = 3

3) y = 5

4) y = 9

Step-by-step explanation:

1) when x = -2

y = 2x + 3

y = 2(-2) +3

y = -1

2) when x = 0

y = 2x + 3

y = 2(0) +3

y = 3

3) when x = 1

y = 2x + 3

y = 2(1) +3

y = 5

4) when x = 3

y = 2x + 3

y = 2(3) +3

y = 9

Answer:

but how do you want it done?

Step-by-step explanation:

The function is never negative.

option D is the correct answer.

A negative function is a function in which the resulting y value is negative.

Also, a negative function is a function that has y values that are less than zero for any x values. In other words, a negative function has a negative sign in front of its output.

From the given graph, the x and y values started from 0 and increases into the positive direction, so we can conclude that the function can never be negative.

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Step-by-step explanation:

Flip f(x) about the x-axis by multiplying it by -1

  - f(x)

  the squish it skinnier by multiplying it by 4

g(x) = - 4 f(x)   = -4 x^2

Answer:

C

Step-by-step explanation:

2 in. x 1 1/4 in. x 1 1/2 in. = 2/1 in. x 5/4 in. x 3/2 in. = 30/8 cubic inches =                 3 6/8 = 3 3/4 cubic inches

9514 1404 393

Answer:

  Part A: 2 ft²

  Part B: draw a diagonal (AC, for example); 1 ft²

Step-by-step explanation:

Part A:

The area of a parallelogram is given by the formula ...

  A = bh

where 'b' is the length of the base, and 'h' is the perpendicular distance between the bases.

Using the numbers shown on the diagram, the area is ...

  A = (3 ft)(2/3 ft) = 3·2/3 ft²

  A = 2 ft² . . . . . area of the parallelogram

__

Part B:

Typically, a polygon is partitioned into triangles by drawing diagonals from one of the vertices. It does not matter which one. (In a quadrilateral, only one diagonal can be drawn from any given vertex.) Here, the "base" of each triangle is the same as the base of the parallelogram: 3 feet. The "height" of each triangle is the same as the height of the parallelogram: 2/3 ft.

The area of a triangle is given by the formula ...

  A = 1/2bh

  A = 1/2(3 ft)(2/3 ft) = (1/2)(3)(2/3) ft²

  A = 1 ft² . . . . . . . . area of each triangle

_____

Additional comment

It should be no surprise that the area of each of the two congruent triangles is 1/2 the area of the parallelogram.

Answer:

i think the fourth one is equvilent ratio

Step-by-step explanation:

divide 42 cm. by 5 minutes, which leaves you with 8.4 cm/minute. hope this helps, please mark brainliest and have a great day

Answer:

The mean number of customers that will arrive in a five-minute period is 2.

Step-by-step explanation:

a. What is the mean or expected number of customers that will arrive in a five-minute period

For one minute, the mean is of 0.4 customers.

So, using proportions, for 5 minutes, the mean is of 5*0.4 = 2 customers.

The mean number of customers that will arrive in a five-minute period is 2.

Answer:

x=6

Step-by-step explanation:

6 – 0.2x = 2 (6 – 0.6x)

Distribute

6 – 0.2x = 12 – 1.2x

Add 1.2x to each side

6 – 0.2x+1.2x = 12 – 1.2x+1.2x

6 +x = 12

Subtract 6 from each side

6+x-6 = 12 –6

x = 6

Answer:

\(\frac{-4x + 9}{2x (x - 2)}\)

Answer:

In the equation y=mx+b, 'm' is the slope of the line and 'b' is the y-intercept.  

First, you should find the slope of the line.  To do this, use the equation M=y2-y1/x2-x1.  Using the two given points (3,6) and (8,4), you can solve for M.  

M=4-6/8-3

M=-2/5 (-0.4 in decimal form)

Now, your equation is y=-0.4x+b

Next you must solve for b to find the y-intercept.  You can do this by subbing one of the given points in for x and y.  

Using the point (3,6):

y=-0.4x+b

6=-0.4(3)+b

6=-1.2+b

Isolate b:

6+1.2=b

b=7.2

And now you have the equation of the line!

y=-0.4x+7.2 (IN FRACTION FORM: y=-2/5x+36/5)

Step-by-step explanation:

Answer:

55

Step-by-step explanation:

because 25+10+10+5+5=55

The total value of the coins in the jar is A = $ 0.55

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

The number of quarters = 1

So , the value of quarters = $ 0.25

The number of cents = 2

So , the value of cents = $ 0.20

The number of nickels = 2

So , the value of nickels = $ 10

And , the equation will be

A = value of quarters + value of cents + value of nickels

On simplifying , we get

A = 0.25 + 0.20 + 0.10

A = $ 0.55

Therefore , the value of the coins is A = $ 0.55

Hence , the equation is A = $ 0.55

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The value of the coin in 2019 would be approximately $132.

To calculate the value of the coin in 2019, we need to consider the annual increase rate of 16.9% from 2010 to 2019. We can use the compound interest formula to find the final value.

Starting with the initial value of $40 in 2010, we can calculate the value in 2019 as follows:

Value in 2019 = Initial value * (1 + Rate)^n

where Rate is the annual increase rate and n is the number of years between 2010 and 2019.

Plugging in the values:

Value in 2019 = $40 * (1 + 0.169)^9

Value in 2019 ≈ $40 * 2.996

Value in 2019 ≈ $119.84

Rounding the value to the nearest dollar, we get approximately $120. Therefore, the value of the coin in 2019 would be approximately $120.

However, please note that the exact value may vary depending on the specific compounding method and rounding conventions used.

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hola. én gou. hul gh ghî

Answer:

dd

Step-by-step explanation:

4l

The fence in dead center is about 399 feet from the third base.

The Pythagorean Theorem states that in the case of a right triangle, the square of the length of the hypotenuse, which is the longest side,  is equals to the sum of the squares of the lengths of the other two sides.

Hence the equation for the theorem is given as follows:

c² = a² + b².

In which:

For the triangle in this problem, we have that:

Hence the distance is obtained as follows:

d² + 90² = 409²

\(d = \sqrt{409^2 - 90^2}\)

d = 399 ft.

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Reason: The two line segments CF and AH point in the same direction, and they never intersect. Therefore, we consider them parallel.

Skew lines are ones that point in different directions. An example of a pair of skew lines would be AB and DE. Skew lines never intersect, but we don't consider them parallel.

Answer:

0.6826 = 68.26% probability that you have values in this interval.

Step-by-step explanation:

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \(\mu\) and standard deviation \(\sigma\), the z-score of a measure X is given by:

\(Z = \frac{X - \mu}{\sigma}\)

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

X~N(8, 1.5)

This means that \(\mu = 8, \sigma = 1.5\)

What is the probability that you have values between (6.5, 9.5)?

This is the p-value of Z when X = 9.5 subtracted by the p-value of Z when X = 6.5. So

X = 9.5

\(Z = \frac{X - \mu}{\sigma}\)

\(Z = \frac{9.5 - 8}{1.5}\)

\(Z = 1\)

\(Z = 1\) has a p-value of 0.8413.

X = 6.5

\(Z = \frac{X - \mu}{\sigma}\)

\(Z = \frac{6.5 - 8}{1.5}\)

\(Z = -1\)

\(Z = -1\) has a p-value of 0.1587

0.8413 - 0.1587 = 0.6826

0.6826 = 68.26% probability that you have values in this interval.

Answer:

162.8 cm²

Step-by-step explanation:

The curved surface area of a cone can be calculated using the formula:

Curved Surface Area = πrℓ

where r is the base radius of the cone and ℓ is the slant height of the cone.

To find the slant height, we can use the Pythagorean theorem:

ℓ² = r² + h²

where h is the height of the cone.

We know that the height of the cone is not given in the problem statement. However, we can use the length of the cone to find the height. The length of the cone is the distance from the apex of the cone to the edge of the base. This is also the hypotenuse of a right triangle with height h and base radius r. So we can use the Pythagorean theorem again:

8² = r² + h²

h² = 8² - r²

h = √(8² - 5²) = √(64 - 25) = √39

Therefore, the slant height of the cone is ℓ = √(r² + h²) = √(5² + 39) = √(164) = 2√41.

Now we can use the formula for the curved surface area:

Curved Surface Area = πrℓ = π(5)(2√41) = 10π√41 ≈ 162.8 cm²

Therefore, the curved surface area of the cone is approximately 162.8 cm²