The average American gets a haircut every 44 days. Is the average smaller for college students? The data below shows the results of a survey of 20 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. 43, 44, 49, 47, 32, 38, 30, 40, 45, 48, 34, 37, 48, 37, 35, 42, 42, 31, 40, 50 Copy to clipboard What can be concluded at the = 0.10 level of significance? a For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?v Salect an answe H1: ? Select ap answer c. The test statistic ? (please show your answer to 3 decimal places.) d. The p-value = |(Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the conclusion is that ... Select an answer Select an answer At the 10% significance level, the data suggest there is sufficient evidence that p lower than 44 At the 10% significance level, the data suggest there is insufficient evidence that u lower than 44

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The average American gets a haircut every 44 days. Is the average smaller for college
students? The data below shows the results of a survey of 20 college students asking
them how many days elapse between haircuts. Assume that the distribution of the
population is normal.
43, 44, 49, 47, 32, 38, 30, 40, 45, 48, 34, 37, 48, 37, 35, 42, 42, 31, 40, 50
Copy to clipboard
What can be concluded at the = 0.10 level of significance?
a For this study, we should use Select an answer
b. The null and alternative hypotheses would be:
Ho: ?vSelect an answer
H1: ?vSelect ap answer
c. The test statistic
(please show your answer to 3 decimal
v =
places.)
d. The p-value -
(Please show your answer to 4 decimal places.)
e. The p-value is ? v a
f. Based on this, we should Select an answer v the null hypothesis.
g. Thus, the conclusion is that...
Select an answer
Select an answer
At the 10% significance level, the data suggest there is sufficient evidence that p lower than 44
At the 10% significance level, the data suggest there is insufficient evidence that u lower than 44
Transcribed Image Text:The average American gets a haircut every 44 days. Is the average smaller for college students? The data below shows the results of a survey of 20 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. 43, 44, 49, 47, 32, 38, 30, 40, 45, 48, 34, 37, 48, 37, 35, 42, 42, 31, 40, 50 Copy to clipboard What can be concluded at the = 0.10 level of significance? a For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?vSelect an answer H1: ?vSelect ap answer c. The test statistic (please show your answer to 3 decimal v = places.) d. The p-value - (Please show your answer to 4 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the conclusion is that... Select an answer Select an answer At the 10% significance level, the data suggest there is sufficient evidence that p lower than 44 At the 10% significance level, the data suggest there is insufficient evidence that u lower than 44
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Denote μ as the true average number of days that college students get a haircut.

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