All categories

2 years ago

For a population with µ = 100 and σ = 20, what is the X value corresponding to z = -0.75?

Mathematics

1 answer:

Savatey [412]2 years ago

5 0

The X value corresponding to z = -0.75 will be 85. Then the correct option is A.

<h3>What is the z-score?</h3>

The z-score is a statistical evaluation of a value's correlation to the mean of a collection of values, expressed in terms of standard deviation.

The z-score is given as

z = (x - μ) / σ

Where μ is the mean, σ is the standard deviation, and x is the sample.

For a population with µ = 100 and σ = 20.

Then the X value corresponding to z = -0.75 will be

-0.75 = (x - 100) / 20

-15 = x - 100

x = 85

Then the correct option is A.

More about the z-score link is given below.

brainly.com/question/15016913

#SPJ1

You might be interested in

The Kroger Company is one of the largest grocery retailers in the United States, over 2000 grocery stores across the country. Kr

yarga [219]

Answer:

A) Categorical

B) Nominal

Step-by-step explanation:

As we can see from the data that the question only had two answers i-e Yes or no so therefore they were categorical rather than quantitative in which he would have asked the user for how much money they were willing to pay more.

It's nominal because he asked in terms of more or less rather than some specific number

4 0

3 years ago

Which is the equation of the given line in slope-intercept form? (-1, 2) and (1, -4)

Natalka [10]

1. Find the slope using the slope formula.
$\frac{2 - ( - 4)}{ - 1 - 1} = \frac{2 + 4}{ - 2} = - \frac{6}{2} = - \frac{3}{1} = - 3$
2. Plug that slope and either point into an equation in slope-intercept form and solve for b.
$2 = - 3( - 1) + b \\ 2 = 3 + b \\ - 1 = b$
3. Now write your answer as a slope-intercept form equation
$y = - 3x - 1$

6 0

4 years ago

Read 2 more answers

The sum of three numbers is 123

Elan Coil [88]

Answer:

Step-by-step explanation:

6 0

3 years ago

Fill in the blanks HELPPP

Ede4ka [16]

tuesday: -28.5

Wednesday: -5

Thursday: -11.8

Friday: -4.5

6 0

3 years ago

Which equation represents the line that passes through (-3,5) and is parallel to the graph of y= -2/3x+5

Nostrana [21]

Parallel to the graph of y = -2/3x + 5
means that it has the same slope

Rewrite
y = -2/3x + b
plug in the given coordinates to solve for b
5 = -2/3(-3) + b
5 = 2 + b
subtract 2 from both sides
3 = b

plug that back into the equation
y = -2/3x + b
y = -2/3x + 3

The answer is <span>B. y= -2/3x+3</span>

This line is parallel to y = -2/3x + 5 and it passes the point (3, 5).

Hope this helps :)

4 0

3 years ago

For a population with µ = 100 and σ = 20, what is the X value corresponding to z = -0.75?​

For a population with µ = 100 and σ = 20, what is the X value corresponding to z = -0.75?