"NJ Exam 3 H MAT10303. Statis x 'Bi?' Announcements u Blackboart X "I317! Take Test: Exam 3 - MAT-103 x + du \" a Question Completion Status: c) u = 0.05, two tailed test lower 2 = & upper z = QUESTION 9 Many people believe that the average number of Facebook friends is 338. The population standard deviation is 43.2. A random sample of 50 high school students in a particular county revealed that the average number of Facebook friends was 350. At a = 0.05. Is there signicant evidence to conclude that the mean number of friends is greater than 333. (HINT: Use the z-formula associated with the sampling distribution of the means). For the example above, conduct a hypothesis test using the z-test method. Be sure to follow the 5-step format as outlined In the notes. Attach File Browse Local Files