Question
Asked Jan 25, 2020
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In each of Exercises, we have provided a sample mean, sample size, and population standard deviation. In each case, use the one-mean z-test to perform the required hypothesis test at the 5% significance level.

x = 23, n = 15, σ = 4, H0: µ = 22, Ha: µ > 22

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Expert Answer

Step 1

The test hypotheses are given below:

Null hypothesis:H0: µ = 22,

Alternative hypothesis: Ha: µ > 22.

Critical value approach:

Critical value:

For 5% level of significance,

Statistics homework question answer, step 1, image 1
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Step 2

Test statis...

Statistics homework question answer, step 2, image 1
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