Question

Output from a software package follows:

One-sample Z:

Test of mu=35 vs not =35

The assumed standard deviation = 3.4

Variable=x N=25 Mean =36.2 StDev.= 1.62 SE Mean = ? Z= ? Pvalue= ?

(a) Fill in the SE Mean, Z, and Pvalue. Conduct the test using the pvalue.  

(b) Conduct the test using the critical value approach. Draw the rejection region and mark your test statistic Z* on the graph. Is your conclusion consistent with the one from (a)?

(c) Construct a 95% two sided z confidence interval on the mean.

(d) If you use the CI from (c) to make a decision on the test of mu=35 vs not =35, what is your conclusion?

(e) What would the P-value be if the alternative hypothesis is mu > 35?

Answer 1

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