I need to know the answer in Z test not student test (test statistic is t) which was highlighted in pink.
See attached file for full problem description.
I am planning my second trip to Sweden. Of course, I had read about the country and one article stated the average woman there is 69 inches tall with a standard deviation of 2 inches. What do you think the probability is the first woman I meet is taller than 70 inches? During my last trip there, I met 4 women and the average height of all 4 women was 71 inches. Using .05 significance level, should I agree with the findings in the scientific journal or should I dispute it?
The solution gives the details of Z test for height of women in Sweden. Null hypothesis, alternative hypothesis, test statistic , critical value and P value are given with interpretations of the results.