Question: Return to the data on maximum lean angle given in Exercise 28 of this chapter. Carry out a test at significance level .10 to see

Return to the data on maximum lean angle given in Exercise 28 of this chapter. Carry out a test at significance level .10 to see whether the population standard deviations for the two age groups are different (normal probability plots support the necessary normality assumption).
Data from Exercise 28

YF: 29, 34, 33, 27, 28, 32, 31, 34, 32, 27 OF: 18, 15, 23. 13. 12

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