Data show that men between the ages of 20 and 29 in a general population have a mean height of 69.3inches, with a standard deviation of 2.4 inches. A baseball analyst wonders whether the standard deviation of heights ofmajor-league baseball players is less than 2.4 inches. The heights(in inches) of 20 randomly selected players are shown in the table

72

74

71

73

76

70

77

75

72

72

77

71

75

70

73

74

75

73

74

74

Test the notion at the =0.05 level of significance.

What are the correct hypotheses for thistest?

The null hypothesis is H0:

The alternative hypothesis is H1:

Calculate the value of the test statistic.

2=

TheP-value is