Question

The average American gets a haircut every 44 days. Is the average different for college students? The data below shows the results of a survey of 14 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. 34, 34, 48, 47, 33, 36, 33, 47, 33, 50, 33, 41, 39, 31 What can be concluded at the the α = 0.01 level of significance level of significance? For this study, we should use The null and alternative hypotheses would be: H 0 : H 1 : The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 3 decimal places.) The p-value is α Based on this, we should the null hypothesis. Thus, the final conclusion is that ... The data suggest the populaton mean is significantly different from 44 at α = 0.01, so there is enough evidence to conclude that the population mean number of days between haircuts for college students is different from 44. The data suggest the population mean is not significantly different from 44 at α = 0.01, so there is enough evidence to conclude that the population mean number of days between haircuts for college students is equal to 44. The data suggest the population mean number of days between haircuts for college students is not significantly different from 44 at α = 0.01, so there is not enough evidence to conclude that the population mean number of days between haircuts for college students is different from 44.

Answer 1