A sample is selected from a population with μ = 50 and σ = 12.If the sample mean of M = 56 produces a z-score of z = +1.00,then how many scores are in the sample?
A)2
B)4
C)9
D)16

Name: A sample is selected from a population with μ = 50 and σ = 12.If the sample mean of M = 56 produces a z-score of z = +1.00,then how many scores are in the sample? A)2 B)4 C)9 D)16
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Question

Quizplus · Accepted Answer

The z-score formula is z = (M - μ) / (σ/√n). Plugging in the values: 1 = (56 - 50) / (12/√n). Solving for n gives n = 4.

A Sample Is Selected from a Population with μ =