Question: 62. Return to the data on maximum lean angle given in Exercise 27 of this chapter. Carry out a test at signi cance level .10

62. Return to the data on maximum lean angle given in Exercise 27 of this chapter. Carry out a test at signi cance level .10 to see whether the population standard deviations for the two age groups are different

(normal probability plots support the necessary normality assumption).

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