Math Problem Statement
ou wish to test the following claim ( H a ) at a significance level of α
0.05 .
H o : μ
73.7
H a : μ ≠ 73.7
You believe the population is normally distributed and you know the standard deviation is σ
6.6 . You obtain a sample mean of M
76 for a sample of size n
55 .
What is the critical value for this test? (Report answer accurate to three decimal places.) critical value = ±
1.96 Correct
What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic =
Solution
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Math Problem Analysis
Mathematical Concepts
Hypothesis Testing
Normal Distribution
Standard Deviation
Formulas
Z-test formula
Theorems
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Suitable Grade Level
Advanced College Level