For a sample with M = 80,a score of X = 88 corresponds to z = 2.00.What is the sample standard deviation?
A)2
B)4
C)8
D)16

Name: For a sample with M = 80,a score of X = 88 corresponds to z = 2.00.What is the sample standard deviation? A)2 B)4 C)8 D)16
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Question

For a sample with M = 80,a score of X = 88 corresponds to z = 2.00.What is the sample standard deviation?​
A)​2
B)​4
C)​8
D)​16

Quizplus · Accepted Answer

The formula for calculating a z-score is z = (X - M) / SD, where X is the score, M is the mean, and SD is the standard deviation. Plugging in the given values, 2 = (88 - 80) / SD. Solving for SD, we get SD = 8 / 2 = 4.

For a Sample with M = 80,a Score of X