(Solved): The average American gets a haircut every 42 days. Is the average larger for college students? The ...

The average American gets a haircut every 42 days. Is the average larger for college students? The data below shows the results of a survey of 13 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. 47, 35, 41, 42, 37, 37, 51, 46, 39, 54, 48, 53, 43 What can be concluded at the the a = 0.05 level of significance level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? Select an answer ? H?? Select an answer c. The test statistic ? d. The p-value = e. The p-value is ? a f. Based on this, we should g. Thus, the final conclusion is that ... = (please show your answer to 3 decimal places.) (Please show your answer to 3 decimal places.) Select an answer the null hypothesis. O The data suggest the populaton mean is significantly higher than 42 at a = 0.05, so there is sufficient evidence to conclude that the population mean number of days between haircuts for college students is higher than 42. O The data suggest the population mean number of days between haircuts for college students is not significantly higher than 42 at a = 0.05, so there is insufficient evidence to conclude that the population mean number of days between haircuts for college students is higher than 42. The data suggest the population mean is not significantly higher than 42 at a = 0.05, so there is sufficient evidence to conclude that the population mean number of days between haircuts for college students is equal to 42.