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 2.5 inches. A baseball analyst wonders whether the standard deviation of heights of major-league baseball players is less than 2.5 inches. The heights (in inches) of 20 randomly selected players are shown in the table. Click the icon to view the data table. 1 Data Table Test the notion at the a = 0.10 level of significance. What are the correct hypotheses for this test? The null hypothesis is Ho: o = 2.5. 72 74 7173 76 70 77 76 72 72 77 73 75 70 73 74 75 73 74 74 The alternative hypothesis is H,: o < 2.5. Calculate the value of the test statistic. x2 =(Round to three decimal places as needed.) Print Done

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.