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Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

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BuyFindarrow_forward

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

A researcher selects a sample of n = 16 individuals from a normal population with a mean of μ = 40 and σ = 8. A treatment is administered to the sample and after treatment, the sample mean is M = 43. If the researcher uses a hypothesis test to evaluate the treatment effect, what z-score would be obtained for this sample?

To determine

To find: The value of z-score.

Explanation

Given info:

The sample size n=16, population mean μ=40, population standard deviation σ=8 and sample mean M=43

Calculation:

The z-score is obtained as follows:

z=Mμ

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