If the scores on a test have a mean of 26 and a standard deviation of 4, what is the z-score for a mean of 18?

If the scores on a test have a mean of 26 and a standard deviation of 4,  the z-score for a mean of 18 is -2.

Using this formula

z = (x – μ) / σ

Where:

x=18

μ= Mean=26

Standard deviation=σ=4

Let plug in the formula

z=(18-26)/4

z-8/4

z=-2

Inconclusion If the scores on a test have a mean of 26 and a standard deviation of 4,  the z-score for a mean of 18 is -2.

Learn more about z-score here:link

180

step-by-step explanation:

12-2=10

20-2=18

18x10=180

answer: answer: d) v= 1/6 bh  

step-by-step explanation:

since according to the given question,   a pyramid is placed inside a prism.

step-by-step explanation: