# The USA Today reports that the average expenditure on Valentine's Day is \$100.89. Do male and female consumers differ in the amounts they spend? The average expenditure in a sample survey of 41 maleconsumers was \$135.67. and the average expenditure in a sample survey of 40 female consumers was \$68.64. Based on past surveys, the standard deviation for male consumers is assumed to be \$37, andExercise 10.27 Algorithmic: Not Answeredtne tmuuru uCnutionnvnmnurC coNsumers IS assumed to be \$21.a. 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)?b. At 99% confidence, what is the margin of error (to 2 decimals)?c. Develop a 99% confidence interval for the difference between the two population means (to 2 decimals). Use z-table.

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Step 1

The provided information are:

Step 2

(a)

The point estimate of the difference between the population mean expenditure for males and the population mean expenditure for females can be calculated as:

Step 3

(b)

The margin of error can ...

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