A study of the number of business lunches that exec-utives in the insurance and banking industries claim as deductible expenses per month was based on randomsamples and yielded the following results:n1 = 40 x1 = 9.1 s1 = 1.9n2 = 50 x2 = 8.0 s2 = 2.1 Use the four steps in the initial part of Section 1 and the0.05 level of significance to test the null hypothesis μ1 −μ2 = 0 against the alternative hypothesis μ1 − μ2 Z 0.

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