Question
Facebook claims that the average number of Facebook friends per Facebook user is 190; however, whenever we collect a significant amount of data we find
Facebook claims that the average number of Facebook friends per Facebook user is 190; however, whenever we collect a significant amount of data we find that users have, on average, significantly more than 190 friends.So we want to test the claim that the population mean number of Facebook friends is actually more than 190.
Using the data you collected from Chapter 8's deep dive discussion, tell us in your Chapter 9 deep dive post:
- The number of Facebook friends each of those ten friends has,
- The 95% confidence interval for the number of Facebook friends a Facebook user has based on your data,
Friend 1: 286
Friend 2: 453
Friend 3: 425
Friend 4: 778
Friend 5: 593
Friend 6: 960
Friend 7: 615
Friend 8: 1673
Friend 9: 346
Friend 10: 1080
We are 95% confident that the true population mean number of Facebook friends a Facebook user has isbetween 418.11 and 1023.7.
- The complete hypothesis test, with alpha of 0.05, using our textbook as a resource,
- Giving the hypotheses (notice the plural),
- Giving the assumptions andexactlywhythe assumptions are (or are not) met,
- Giving the exact steps for computing the test statistic and the p-value using the calculator method,
- Giving the decision, and
- Giving a conclusion statement of what we should conclude based on previous steps in the context of the variable and the population.
- Should we email Facebook and tell them that they are wrong?Why or why not?
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