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Many people believe that the average number of Facebook friends is 125. The population standard deviation is 37.6. A random sample of 50 high school
Many people believe that the average number of Facebook friends is 125. The population standard deviation is 37.6. A random sample of 50 high school students in a particular county revealed that the average number of Facebook friends was 145. At a=0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 125? Part: 0 / 5 Part 1 of 5 State the hypotheses and identify the claim with the correct hypothesis. Ho: M = 125 not claim H H : u > 125 claim 0=0 0+0 This hypotheses test is a one-tailed test. X 5 Part: 1 / 5 Part 2 of 5 Find the critical value(s). Round the answer to two decimal places. If there is more than one critical value, separate them with commas. Critical value(s): X Part: 2 / 5 Part 3 of 5 Compute the test value. Always round z score values to two decimal places. 2= X Part: 3 / 5 Part 4 of 5 Make the decision. (Choose one) |the null hypothesis. X 5 Part: 4 / 5 Part 5 of 5 Summarize the results. There (Choose one) |enough evidence to support the claim that the mean number of Facebook friends is greater than 125. X 5
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