Many people believe that the average number of Facebook friends is 150. The popu

Question

Many people believe that the average number of Facebook friends is 150. The population standard deviation is 37.4. A random sample of 43 high school students in a particular county revealed that the average number of Facebook friends was 158. At a-0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 150? Part 1 State the hypotheses and identify the claim with the correct hypothesis. claim This hypothesis test is a one tailed test. Part 2 out of 5 Find the critical value(s). Round the answer to two decimal places. Critical value is NEX Tutorial

Explanation / Answer

The critical value is z0.99 = 2.33

        

                                 

                                                     

                                          

                                                             

                                     

                                                          

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