The average American gets a haircut every 39 days. Is the average different for college studer The data below shows the results of a survey of 12 college students asking them how many elapse between haircuts. Assume that the distribution of the population is normal. 51, 45, 45, 44, 33, 34, 48, 51, 50, 43, 39, 41 What can be concluded at the the a = 0.05 level of significance level of significance? a. For this study, we should use E-test for a population mean b. The null and alternative hypotheses would be: Ho: ? Select an answer v

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The average American gets a haircut every 39 days. Is the average different for college students?
The data below shows the results of a survey of 12 college students asking them how many days
elapse between haircuts. Assume that the distribution of the population is normal.
51, 45, 45, 44, 33, 34, 48, 51, 50, 43, 39, 41
What can be concluded at the the a = 0.05 level of significance level of significance?
a. For this study, we should use [t-test for a population mean
b. The null and alternative hypotheses would be:
Но:
Select an answer
H.:
?v Select an answer v
c. The test statistic ?v =
(please show your answer to 4 decimal places.)
d. The p-value =
(Please show your answer to 4 decimal places.)
e. The p-value is E V▼ a
f. Based on this, we should reject
g. Thus, the final conclusion is that.
O The data suggest the populaton mean is significantly different from 39 at a=0.05, so
there is enough evidence to conclude that the population mean number of days
between haircuts for college students is different from 39.
O The data suggest the population mean is not significantly different from 39 at a = 0.05,
so there is enough evidence to conclude that the population mean number of days
between haircuts for college students is equal to 39.
O The data suggest the population mean number of days between haircuts for college
students is not significantly different from 39 at a = 0.05, so there is not enough
evidence to conclude that the population mean number of days between haircuts for
college students is different from 39.
] the null hypothesis.
Transcribed Image Text:The average American gets a haircut every 39 days. Is the average different for college students? The data below shows the results of a survey of 12 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. 51, 45, 45, 44, 33, 34, 48, 51, 50, 43, 39, 41 What can be concluded at the the a = 0.05 level of significance level of significance? a. For this study, we should use [t-test for a population mean b. The null and alternative hypotheses would be: Но: Select an answer H.: ?v Select an answer v c. The test statistic ?v = (please show your answer to 4 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is E V▼ a f. Based on this, we should reject g. Thus, the final conclusion is that. O The data suggest the populaton mean is significantly different from 39 at a=0.05, so there is enough evidence to conclude that the population mean number of days between haircuts for college students is different from 39. O The data suggest the population mean is not significantly different from 39 at a = 0.05, so there is enough evidence to conclude that the population mean number of days between haircuts for college students is equal to 39. O The data suggest the population mean number of days between haircuts for college students is not significantly different from 39 at a = 0.05, so there is not enough evidence to conclude that the population mean number of days between haircuts for college students is different from 39. ] the null hypothesis.
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