Given a normal distribution of test scores with
= 80,s²= 49,what is the z score corresponding to a test score of 70?

Name: Given a normal distribution of test scores with = 80,s 2 = 49,what is the z score corresponding to a test score of 70?
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Question

Given a normal distribution of test scores with = 80,s²= 49,what is the z score corresponding to a test score of 70?

Quizplus · Accepted Answer

To find the z-score for a test score of 70 in a normal distribution with mean = 80 and standard deviation = 7, use the formula z = (X - μ) / σ, where X = 70, μ = 80, and σ = 7. This gives z = (70 - 80) / 7 = -1.43. Thus, the answer is choice A.

Given a Normal Distribution of Test Scores with