Hint(s) Check My Work (1 remaining) TextRequest reports that adults 18 - 24 years old send and receive 128 texts every day. Suppose we take a sample of 25 - 34 year olds to see if their mean number of daily texts differs from the mean for 18 - 24 year olds reported by TextRequest. a. Select the null hypothesis we should use to test whether the population mean daily number of texts for 25 - 34 year olds differs from the population dally mean number of texts for 18 - 24 year olds. 1. Ho: A = 128 2. Ho: H # 128 3. Ho: H > 128 1 Select the alternative hypothesis we should use to test whether the population mean daily number of texts for 25 - 34 year olds differs from the population daily mean number of texts for 18 - 24 year olds. 1. Ha: # # 128 2. Ha: H = 128 3. Ha: ( > 128 1 b. Suppose a sample of thirty 25 - 34 year olds showed a sample mean of 118.6 texts per day. Assume a population standard deviation of 33.17 texts per day and compute the p-value. Round your answer to four decimal places. 0.1336 c. With a = 0.05 as the level of significance, what is your conclusion? Do not reject Ho. We cannot conclude that the population mean daily texts for 25 - 34 year olds differs significantly from the population mean of 128 daily texts for 18 - 24 year olds. d. Repeat the preceding hypothesis test using the critical value approach. The critical value(s) is(are) (+/-1.96 Can it be concluded that the population mean differs from 128? No