A distribution of 1000 test scores has a mean of u = 287. Following standardization, what is the standard deviation for this distribution?

Answers

Answer 1

Answer:

c. σ = 1

Regardless of the original distribution, after standardizing to z-scores, the standard deviation is always 1.

Step-by-step explanation:

quizlet


Related Questions

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8
6
4
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Which function is graphed?
46
8
N
-8 -6 -4 -20
-2
-4
-6
-8
O A. y- *#4x23
[+ ,
1-x+4,52

Answers

The third one Hope this helps ur welcome

help me out with this problem ?​

help me out with this problem ?

Answers

Answer:

(-4.5, 2.5)

Step-by-step explanation:

The solution for two graphed linear equations is the intersection (The point where two lines meet or cross).

Write the Verbal phrases as an equation or an inequality? Use "x" as the variable?

Write the Verbal phrases as an equation or an inequality? Use "x" as the variable?

Answers

Step-by-step explanation:

8.x×8-12=50

8x-12=50

9.1/2x>or=100

10.2 whole number5/9-x=31

HELP HOW DO I SOLVE TS

HELP HOW DO I SOLVE TS

Answers

Answer: \(x\geq 4\)

Step-by-step explanation:

Solving inequalities is just like solving an equation. The algebra is the same, but you just have to remember the symbol used.

(just remember to flip the sign if you ever divide by a negative number)

Here are the steps to solve this problem:

\(\frac{8x+3}{5}\geq 7\)

Multiply both sides by 5: \(8x+3\geq 35\)

Subtract both sides by 3: \(8x\geq 32\)

Divide both sides by 8: \(x\geq 4\)

\(x\geq 4\) is the final answer.

The ratio of Mary's saving to Janet's savings in January was 7:4. When Mary's saving was decreased by 40% in February and Janet's savings increased by half as much, their total savings in February became $2040. How much was Janet's savings in January?​

Answers

Janet's savings in January is $800

What is word problem?

A word problem in math is a math question written as one sentence or more. This statements are interpreted into mathematical equation or expression.

Represent Mary's savings by x and Janet's savings by y

7/4 = x/y

40/100 × x = 40x/100 = 2x/5

New savings for Mary =

x -2x/5 = 5x - 2x)/5 = 3x/5

50/100 × y = y/2

New savings for Janet =

y + y/2 = 3y/2

3y/2 + 3x/5 = 2040

15y + 6x = 20400

7y = 4x

y = 4/7x

Substitute (4/7)x for y

15( 4/7) x + 6x = 20400

(60/7 )x + 6x = 20400

60x + 42x = 142800

102x = 142800

x = 142800/102

x = $ 1400

y = 4/7 × 1400

y = $800

Therefore, the savings for Janet in January is $800.

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2|3x-9|+5<25 help please

Answers

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Which diagram best shows that 14x2 + 21x in factored form is 7x(2x + 3)?

Which diagram best shows that 14x2 + 21x in factored form is 7x(2x + 3)?

Answers

Answer: B

Step-by-step explanation:

Which diagram best shows that 14x2 + 21x in factored form is 7x(2x + 3)?

Fourth diagram represent the 14x²+21x in factored form is 7x(2x + 3)

What is Number system?

A number system is defined as a system of writing to express numbers.

The given expression is 14x²+21x

Fourteen x square plus twenty one times of x.

x is the variable and plus is the operator.

14x²+21x

We need to take 7x as common from two terms.

When the quadratic expression is a product of two factors where each one is a linear expression, this is called the factored form.

Seven x is product of two times of x plus three.

7x(2x+3)

The fourth diagram represent the 14x²+21x in factored form is 7x(2x + 3)

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Which diagram best shows that 14x2 + 21x in factored form is 7x(2x + 3)?

i used a variable only once in my class. should it be private static final or just declared inside method

Answers

This is the final static variable for all instances.

That makes the behaviour much more obvious. Modern IDEs will usually suggest changing the second listing into the third.

There is no reason to have an inline declaration initializing the value like the following, as each instance will have its own NUMBER but always with the same value. This is the same than to have only one final static variable for all instances.

The static keyword means the value is the same for every instance of the class. The final keyword means once the variable is assigned a value it can never be changed. The combination of static final in Java is how to create a constant value.

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What is 8(3 + a) = 64
a =

Answers

Answer: a = 3

Step-by-step explanation:

linda Put $610 in a savings account that pays 1.2% interest each year. Enrique puts $590 in a high-yield account that pays 3.9% interest each year.
PART A: After one year who has more money? How much more?
PART B: After a second year who has more money? How much more?

Answers

PART A: Linda has $4.41 more than Enrique after one year.

PART B: Enrique has $12.10 more than Linda after the second year.

PART A: After one year, we can calculate the amount of money each person has in their respective accounts.

For Linda's account:

Principal amount = $610

Interest rate = 1.2%

\(Interest $ earned = Principal $ amount \times (Interest rate/100) = $610 \times (1.2/100) = $7.32\)

\(Total $ amount after one year = Principal amount + Interest earned = $610 + $7.32 = $617.32\)

For Enrique's account:

Principal amount = $590

Interest rate = 3.9%

\(Interest $ earned = Principal amount \times (Interest rate/100) = $590 \times (3.9/100) = $22.91\)

Total amount after one year = Principal amount + Interest earned = $590 + $22.91 = $612.91

Comparing the two amounts, after one year Linda has more money.

The difference in the amount is:

$617.32 - $612.91 = $4.41

Therefore, Linda has $4.41 more than Enrique after one year.

PART B: After a second year, we need to calculate the amounts again.

For Linda's account:

Principal amount = $617.32

Interest rate = 1.2%

\(Interest earned = Principal amount \times (Interest rate/100) = $617.32 \times (1.2/100) = $7.41\)

Total amount after the second year = Principal amount + Interest earned = $617.32 + $7.41 = $624.73

For Enrique's account:

Principal amount = $612.91

Interest rate = 3.9%

\(Interest earned = Principal amount \times (Interest rate/100) = $612.91 \times (3.9/100) = $23.92\)

Total amount after the second year = Principal amount + Interest earned = $612.91 + $23.92 = $636.83

Comparing the two amounts, after the second year Enrique has more money.

The difference in the amount is:

$636.83 - $624.73 = $12.10

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100 pts You have a bag of 15 marbles: 5 blue, 3 red, 4 green, and 3 yellow. You draw 3 marbles without replacement. Which action, performed before the draws, increases the probability of drawing 3 green marbles in a row?

Answers

Answer:

see below

Step-by-step explanation:

You can remove one or more of the other color marbles to increase the probability of drawing a green marble

or

You can add  one or more green marbles to have more green marbles in the bag

ASAPP PLEAASSEE!!!
Nathan deposits $940 every 2 months into his daughter's RESP. If the account earns 3.99% / annual, compound quarterly, how much will be in the account after 25 years?

Answers

There will be approximately $594,311.34 in Nathan's daughter's RESP after 25 years of depositing $940 every 2 months with a 3.99% annual interest rate compounded quarterly.

To calculate the amount in Nathan's daughter's RESP after 25 years, we can use the formula for compound interest:

A = P(1 + r/n)^(nt)

Where:

A = Final amount (amount in the account after 25 years)

P = Principal amount (amount deposited every 2 months)

r = Annual interest rate (in decimal form)

n = Number of times the interest is compounded per year

t = Number of years

In this case, Nathan deposits $940 every 2 months, so the principal amount (P) is $940. The annual interest rate (r) is 3.99% or 0.0399 in decimal form. Since the interest is compounded quarterly, the compounding frequency (n) is 4. The number of years (t) is 25.

Since Nathan deposits every 2 months, we need to calculate the total number of deposits made over 25 years. There are 12 months in a year, so in 25 years, there will be 25 * 12 = 300 months. However, since Nathan deposits every 2 months, the number of deposits (m) is 300 / 2 = 150.

Now, we can substitute these values into the formula:

A = 940(1 + 0.0399/4)^(4*25)

Calculating the exponent first:

(1 + 0.0399/4)^(4*25) ≈ 2.703236

Now, substituting the calculated exponent and the number of deposits into the formula:

A = 940 * 2.703236 * 150 ≈ $594,311.34

Therefore, there will be approximately $594,311.34 in Nathan's daughter's RESP after 25 years of depositing $940 every 2 months with a 3.99% annual interest rate compounded quarterly.

It's important to note that this calculation assumes Nathan makes the same $940 deposit every 2 months consistently over the 25-year period and does not make any withdrawals from the account during that time. Additionally, the actual amount may vary slightly due to rounding and any potential changes in interest rates over the years.

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Factorise:
(5 − )(3 − ) − (2 − )(3 − )

Answers

Answer:

15- 6 =9

Step-by-step explanation:

- ×- =+ now above the question .we can say that _ 5×_ 3=15 .similarly _ 2×_ 3 = 6 now,

15 _6 =9

[~S & (R V S) ] ≡ (Q ⊃ S) where A = T, S = F, R = F, Q = T

Answers

[~S & (R V S)] ≡ (Q ⊃ S) is true when A = T, S = F, R = F, and Q = T by substituting the propositional variables.

What is truth table?

A truth table is a table used to determine the truth values of a compound proposition, which is a logical statement made up of simpler propositions using logical operators such as "and" (represented by "&"), "or" (represented by "V"), "not" (represented by "~"), conditional (represented by "⊃"), and biconditional (represented by "≡").

According to question:

Let's substitute the given truth values for the propositional variables in the given statement:

[~F & (F V F)] ≡ (T ⊃ F)

Using the truth table for conjunction (represented by "&") and disjunction (represented by "V"), we can simplify the left-hand side of the equivalence:

[T & F] ≡ (T ⊃ F)

Using the truth table for conditional (represented by "⊃"), we can simplify the right-hand side of the equivalence:

F ≡ F

Since both sides of the equivalence have the same truth value, the statement is true.

Therefore, [~S & (R V S)] ≡ (Q ⊃ S) is true when A = T, S = F, R = F, and Q = T.

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Find the products
6 + 8
6 - 8

Answers

Answer:

14

-2

Step-by-step explanation:

\( = (6 + 8) \times (6 - 8) \\ = 14 \times ( - 2) \\ = -28 \)

Evaluate the function for the indicated values of x.
2x + 1, X3-5
f(x)= x?, -5 3 - X, x 5

Evaluate the function for the indicated values of x.2x + 1, X3-5f(x)= x?, -53 - X, x 5

Answers

Answer:

f(−10) =  ⇒ -19

f(2) =  ⇒ 4

f(−5) =  ⇒ -9

f(−1) =  ⇒ 1

f(8) =  ⇒ -5

Step-by-step explanation:

look at the image below for the question !!!!!!

look at the image below for the question !!!!!!

Answers

Answer:

136 cm2

Step-by-step explanation:

6*2=12    12*2=24

6*7=42   42*2=84

7*2=14    14*2=28

Add.

24+84+28=136

I hope this helps!

Can someone help me with this problem?

Can someone help me with this problem?

Answers

Answer:

The answer to the question provided is:

\( \frac{1}{6} \)

Step-by-step explanation:

Remember:

\(m = \frac{y_2 - y_1 }{x_2 - x_1}\)

Let's plug in!

\(m = \frac{ - 17 - ( - 18)}{ - 1 - ( - 7)} = \frac{ 1}{ 6} \)

If a picture measures 3 inches by 5 inches and it is dilated by a scale factor of 4, the new dimensions will be ________________________________________.


A. 12 inches by 20 inches

B. 15 inches by 15 inches

C. 7 inches by 9 inches

D. 0.75 inches by 1.25 inches

Answers

Answer:

A) 12 inches by 20 inches

Step-by-step explanation:

Dilation of a scale factor means to increase by a factor of 4.
That basically mean multiply the object by 4.

Therefore 3 inches x 4 = 12 inches

And 5 inches x 4 = 20

∠10 and angle _____ are complementary angles.?
a.) ∠9 I
b.)∠11 O

10 and angle _____ are complementary angles.?a.) 9 Ib.)11 O

Answers

Answer:

9

Step-by-step explanation:

they add up to 90 degrees

Answer: B

Step-by-step explanation:

HAVE A BLESSED DAY!!!!!!

Which situation would NOT have a solution if you wanted to know how many pieces of candy each
person would receive?
a) Zero pieces of candy split equally among 4 people
b) Four pieces of candy split among zero people

Answers

Answer:
It would have to be B?

Step-by-step explanation:

can’t divide by zero, that’s undefinable.

What is the surface area of the figure shown?

What is the surface area of the figure shown?

Answers

Answer:

90 square feet.

Step-by-step explanation:

Let's set up an equation!

SA= 2(xy)+2(xz)+2(yz).

Lets say that x=3 y=6 and z=3

We plug it in.

2(18)+2(9)+2(18)= SA

36+18+36=SA

72+18=SA

90=SA

90 square feet = Surface area.

Find the reciprocal of 5/6, b≠0

Answers

Answer:

6/5

Step-by-step explanation:

The reciprocal of 5/6 means flip it

6/5

Answer:

6/5

Step-by-step explanation:

The reciprocal of a fraction is switching the numerator with denominator.

5/6 ⇒ 6/5

Rationalise the denominator and simply

Rationalise the denominator and simply

Answers

\(▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪\)

Let's solve :

\( \dfrac{24}{ \sqrt{6} } \)

\( \dfrac{24}{ \sqrt{6} } \times \dfrac{ \sqrt{6} }{ \sqrt{6} } \)

\( \dfrac{24 \sqrt{6} }{6} \)

\(4 \sqrt{6} \)

Answer:

4√6

Step-by-step explanation:

=> 24/√6 ×√6/√6

=> 24√6/6

=> 4√6

hope it's helpful to you ☺️

This graph shows the amount of sugar and the total calories in 8 items on the
menu at a restaurant

This graph shows the amount of sugar and the total calories in 8 items on themenu at a restaurant

Answers

Answer:

a: there are 30 calories additional grams of sugar for every additional calorie in a menu item

Step-by-step explanation:

Which of the following sets of numbers could not represent the three sides of a right
triangle?
11, 60, 61}
{14, 48, 50
{46, 60, 75}
(39,80,89}

Answers

Answer: D

Step-by-step explanation: it equals 181

The formula for the surface area of a cylinder with radius r and height h is at times twice the product of the
radius and height plus twice the product of t and the square of the radius. Translate this verbal expression into
an algebraic expression.

Answers

Answer:

\(2\pi \: rh + 2\pi {r}^{2} = 2(t \times {r}^{2} )\)

Step-by-step explanation:

The TSA of the cylinder

\(2\pi \: rh + 2\pi {r}^{2} \)

In Mathematics, 'is' is =

Twice means 2( )

Product means ×

So we have

\(2\pi \: rh + 2\pi {r}^{2} = 2(t \times {r}^{2} )\)

as the answer.

Find the constant proportionality for the ratio 4/7

Answers

but the answer is y

Step-by-step explanation:

yauyy

Pleaseeeee answerrrrrr

Pleaseeeee answerrrrrr

Answers

Answer:

x=90-35

=55 is the answer

HELP ASAP I don't understand

HELP ASAP I don't understand

Answers

Answer:

No

Step-by-step explanation:

These are the artists of each subject, not the general function of each genre.

Brainliest for

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