Question

). Do male and female consumers differ in the amounts they spend? The average expenditure in a consumers was $68.64 Based on past surveys, the standard deviation for male e ne's Day was expecued to be $100.89 (USA Today, February 1 The average expenditure on Valenti sample survey of 40 male consumers was $135.67, and the average expenditure in a sample survey of essumed to be $35, and the standard deviation for temale consumers is assumed to be $20. The z value is 2.576 Round your answers to 2 decimal places a. What is the point estimate of the difference between thae 13, 2006) 30 female consumers is population mean expenditure for males and the popuilation mean experditure for females 7.03 b. At 99% confidence, what is the margn or error? 15.16 c. Develo a 99 % confidence rterval for the dmerence between the two population means 1.87 to 82.19

Answer 1

Given is a two sample problem. This can be solved using the 2 sample z-test.

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