Question: A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the 10%

A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the

10%

significance level.

x=26,

n=32,

=7,

H0:

=28,

Ha:

<28

The test statistic is z= ?

critical T value?

reject or do not reject

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