SAT scores: The College Board reports that in 2018 the mean score on the math SAT was 527 and the population standard deviation was 6 :103. A random sample of 20 students who took the test in 2019 had a mean score of 549. Following is a dotplot of the 20 scores. 0 lOO 200 300 400 500 600 700 800 Compute the value of the test statistic. Round the answer to two decimal places. Z XHeight and age: Are older men shorter than younger men? According to a national report, the mean height for U.S. men is 69.4 inches. In a sample of 304 men between the ages of 60 and 69, the mean height was I : 68.8 inches. Public health officials want to determine whether the mean height 1.1 for older men is less than the mean height of all adult men. Assume the population standard deviation to be 6 : 3.13. Use the (1:005 level of significance and the Pvalue method with the TI84 calculator. Compute the Pvalue. Round the answer to at least four decimal places. WU