All categories

3 years ago

A score that is 12 points below the mean corresponds to a z-score of z = -3.00. What is the population standard deviation?

1 answer:

vladimir1956 [14]3 years ago

4 0

Standard deviation=4.

let the mean be 12 and the score be 0 (therefore 12 point difference.)

0-12/s=-3 (s being standard deviation)
-12/4 = -3

You might be interested in

Erin created a scale drawing for a garden that will be 10 ft by 5 ft. She plans to include a section in the garden for herbs, wh

Elanso [62]

Answer:

The dimensions of the herb garden in the scale drawing are 2.4 in. by 6 in

Step-by-step explanation:

we know that

The dimensions of the garden in the actual are 10 ft by 5 ft

The dimensions of the garden on the scale drawing are 12 in. by 6 in

step 1

Find the scale factor

To find the scale factor divide the corresponding side on the scale drawing by the corresponding side in the actual

$\frac{12}{10}\ \frac{in}{ft}$

simplify

$1.2\ \frac{in}{ft}$

That means

1.2 inches in the drawing represent 1 foot in the actual

step 2

Find out the dimensions of the herb garden on the scale drawing

we know that

The dimensions of the herb garden in the actual are 2 ft by 5 ft

Multiply by the scale factor

$2\ ft=2(1.2)=2.4\ in$

$5\ ft=5(1.2)=6\ in$

therefore

The dimensions of the herb garden in the scale drawing are 2.4 in. by 6 in

5 0

3 years ago

Help with this pls!!!!!!!!

sveticcg [70]

Answer:

san po jan

<h3>step_by istep explanation_</h3>

6 0

3 years ago

Which expression is NOT equivalent to 24 + 18?

Alex

2(12+18) is not equivalent to 24+18

4 0

3 years ago

3/38-3/7<br> 2+1/35<br> 3/56+3/2

prohojiy [21]

Answer:

87/56

Step-by-step explanation:

Simplify the following:

3/56 + 3/2

Put 3/56 + 3/2 over the common denominator 56. 3/56 + 3/2 = 3/56 + (28×3)/56:

3/56 + (28×3)/56

28×3 = 84:

3/56 + 84/56

3/56 + 84/56 = (3 + 84)/56:

(3 + 84)/56

3 + 84 = 87:

Answer: 87/56

4 0

3 years ago

The boys and girls soccer clubs are fundraising for new uniforms. The boys soccer club is selling candy bars for $2 a piece. The

blondinia [14]

Answer:

2b + 4c = 800

c > 100

Step-by-step explanation:

6 0

3 years ago