The USA Today reports that the average expenditure on Valentine's Day is $100.89. Do male and female consumers differ in the amo
unts they spend? The average expenditure in a sample survey of 50 male consumers was $135.67, and the average expenditure in a sample survey of 38 female consumers was $68.64. Based on past surveys, the standard deviation for male consumers is assumed to be $40, and the standard deviation for female consumers is assumed to be $23. 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)?
Given : The average expenditure in a sample survey of 50 male consumers was $135.67, and the average expenditure in a sample survey of 38 female consumers was $68.64.
i.e.
The best point estimate of the difference between the two population means is given by :-
Hence, the point estimate of the difference between the population mean expenditure for males and the population mean expenditure for females : $ 67.03
test each A. with x^2-1, A is false B. with -x^2-1, B is false C. cannot find contradiction D. the axis is actually x=0, 0 is nithere positive nor negative, false
