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An analyst collected data from 25 randomly selected transactions and found the purchase amounts (in 16.49 25.58 32.58 20.21 19.25 $). The mean is $24.81 and the standard deviation is $13.97. The analyst wants to know if the mean 37.79 33.36 4.48 42.83 39.59 purchase amount of all transactions is at least $19. Use the given information to complete parts a through e. 32.27 13.21 11.79 46.89 4.83 25.42 45.93 14.04 3.77 35.12 37.24 5.24 15.59 16.28 40.57 a) What is the null hypothesis? Ho: H = $ 19 (Type an integer or a decimal.) b) Is the alternative one- or two-sided? The alternative hypothesis is one-sided. c) What is the value of the test statistic? The test statistic is 2.08 (Round to two decimal places as needed.) d) What is the P-value of the test statistic? P-value = (Round to four decimal places as needed.)