Question

6. Many people believe that the average number of Facebook friends is 120. The population standard deviation is 36.8. A random sample of 37 high school students in a particular county revealed that the average number of Facebook friends was 147. At =α0.10, is there sufficient evidence to conclude that the mean number of friends is greater than 120? 1. State hypotheses by filling in the symbol (=,<,>, or not equal) and the population mean: 2. Critical z value is: 3. Z test value is: 4. Reject the null or do not reject the null: 5. Conclusion: is or is not enough evidence

          6. Many people believe that the average number of Facebook
friends is 120. The population standard deviation is 36.8. A random
sample of 37 high school students in a particular county revealed
that the average number of Facebook friends was 147. At =α0.10, is
there sufficient evidence to conclude that the mean number of
friends is greater than 120?
1. State hypotheses by filling in the symbol (=,<,>, or
not equal) and the population mean:
2. Critical z value is:
3. Z test value is:
4. Reject the null or do not reject the null:
5. Conclusion: is or is not enough evidence

Added by Sarah V.

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