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=18, n=36, o=9, H0: u=23, Ha : u<23

The test statistic is z= ?

Identify the critical value(s). Select the correct choice below and fill in the answer box within your choice.

Options

A. The critical value is -za= ?

B. The critical vlaue is za= ?

c. The critical values are +/- za/2= +/- ?

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