The average expenditure in a sample survey of 42 male consumers was $135.67, and the average expenditure in a sample survey of 36 female consumers was $68.64. Based on past surveys, the standard deviation for male consumers is assumed to be $32, and the standard deviation for female consumers is assumed to be $22. What is the point estimate of the difference between the population mean expenditure for males and the population mean expenditure for females (to 2 decimals)?   At 99% confidence, what is the margin of error (to 2 decimals)?   Develop a 99% confidence interval for the difference between the two population means (to 2 decimals). Use z-table.

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Q: USA Today reports that the average expenditure on Valentine's Day was expected to be $100.89. Do…

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