Many people believe that the average number of Facebook friends is 145. The population standard deviation is 36.6. A random sample of 46 high school students in a particular county revealed that the average number of Facebook friends was 149. At a= 0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 145? Part 1 of 5 State the hypotheses and identify the claim with the correct hypothesis. Ho: (Choose one) O

MATLAB: An Introduction with Applications
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Many people believe that the average number of Facebook friends is 145. The population standard deviation is 36.6. A
random sample of 46 high school students in a particular county revealed that the average number of Facebook friends was
149. At a = 0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 145?
Part 1 of 5
State the hypotheses and identify the claim with the correct hypothesis.
Ho:
(Choose one)
O<O
H :
(Choose one)
ロ=ロ
ロロ
This hypotheses test is a (Choose one)
test.
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):
Part 3 of 5
Compute the test value. Always round z score values to two decimal places.
z =
Transcribed Image Text:Many people believe that the average number of Facebook friends is 145. The population standard deviation is 36.6. A random sample of 46 high school students in a particular county revealed that the average number of Facebook friends was 149. At a = 0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 145? Part 1 of 5 State the hypotheses and identify the claim with the correct hypothesis. Ho: (Choose one) O<O H : (Choose one) ロ=ロ ロロ This hypotheses test is a (Choose one) test. 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): Part 3 of 5 Compute the test value. Always round z score values to two decimal places. z =
Part 4 of 5
Make the decision.
(Choose one)
the null hypothesis.
Part: 4 /5
Part 5 of 5
Summarize the results.
There (Choose one) v enough evidence to support the claim that the mean number of
Facebook friends is greater than 145.
Transcribed Image Text:Part 4 of 5 Make the decision. (Choose one) the null hypothesis. Part: 4 /5 Part 5 of 5 Summarize the results. There (Choose one) v enough evidence to support the claim that the mean number of Facebook friends is greater than 145.
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