Mathematics, 25.12.2019 06:31 shaniqwakirkseyniqwa
The average expenditure on valentine's day was expected to be$100.89 (usa today, february 13, 2006). do male and femaleconsumers differ in the amounts they spend? the average expenditurein a sample survey of 40 male consumers was $135.67, and theaverage expenditure in a sample survey of 30 female consumers was$68.64. based on past surveys, the standard deviation for maleconsumers is assumed to be $35, and the standard deviation forfemale 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 thedifference between the population mean expenditure for males andthe population mean expenditure for females?
b. at 99% confidence, what is the marginof error?
c. develop a 99% confidence interval forthe difference between the two population means.
to
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The average expenditure on valentine's day was expected to be$100.89 (usa today, february 13, 2006)....
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