14.3k views
4 votes
In a test with a mean of 100 and a standard deviation of 10, what is the standard deviation for a test score of 120

1 Answer

4 votes

This question is incomplete

Complete Question

In a test with a mean of 100 and a standard deviation of 10, what is the standard score for a test score of 120?

Answer:

The standard score = 2

Explanation:

The formula for Test (T) score is given as:

T score = zσ + μ

z = Standard or z score = ??

Standard deviation (σ) = 10

Mean (μ) = 100

Test score = 120

120 = 10z + 100

120 - 100 = 10z

20 = 10z

z = 20/10

z= 2

Therefore, the standard score = 2

User You Kuper
by
7.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories