Many people believe that the average number of Facebook friends is 145. The population standard deviation is 36.4. A random sample of 42 high school students in a particular county revealed that the average number of Facebook friends was 156. At a=0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 145? Part 1 out of 5 State the hypotheses and identify the claim with the correct hypothesis. This hypothesis test is a _______ test.
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The null hypothesis (H₀) is that the average number of Facebook friends is equal to 145, and the alternative hypothesis (H₁) is that the average number of Facebook friends is greater than 145. H₀: μ = 145 H₁: μ > 145 The claim we are testing is that the mean Show more…
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