Many people believe that the average number of Facebook friends is 145. The population standard deviation is 36.7. A random sample of 35 high school students in a particular county revealed that the average number of Facebook friends was 165. At =α0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 145?
Many people believe that the average number of Facebook friends is 145. The population standard deviation is 36.7. A random sample of 35 high school students in a particular county revealed that the average number of Facebook friends was 165. At =α0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 145?
State the hypotheses and identify the claim with the correct hypothesis.
:H1>μ145 ▼claim/ not claim?
This hypotheses test is a ▼one-tailed test/two tail?
Find the critical value(s). Round the answer to two decimal places. If there is more than one critical value, separate them with commas.
Compute the test value. Always round z score values to two decimal places
Make the decision.
Summarize the results.
| There ▼(Choose one) enough evidence to support the claim that the mean number of Facebook friends is greater than 145. |
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