Data show that men between the ages of 20 and 29 in a general population have a mean height of 69.3 inches, with a standard deviation of 3.2 inches. A baseball analyst wonders whether the standard deviation of heights of major-league baseball players is less than 3.2 inches. The heights (in inches) of 20 randomly selected players are shown in the table. E Click the icon to view the data table. C Test the notion at the a = 0.10 level of significance. What are the correct hypotheses for this test? Data table The null hypothesis is Hg: o = 3.2. The alternative hypothesis is H,: o < 3.2 Calculate the value of the test statistic. 71 76 76 72 72 70 73 74 74 z2= (Round to three decimal places as needed.) 74

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