You wish to test the claim that μ < 300. A sample of 64 yielded a...
You wish to test the claim that μ < 300. A sample of 64 yielded a mean of 280. If σ is known to be 70, compute the value of the standardized test statistic, z.
A. 8.75
B. -0.29
C. 0.29
D. -2.29
Homework Answers
Standardised test statistic is given by
= 
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