What is the point estimate of the difference between the

Assignment Help Basic Statistics

Reference no: EM13617475

The average expenditure on Valentine's Day was expected to be $100.89 (USA Today, February 13, 2006). Do male and female consumers differ in the amounts they spend? The average expenditure in a sample survey of 40 male consumers was $135.67, and the average expenditure in a sample survey of 30 female consumers was $68.64. Based on past surveys, the standard deviation for male consumers is assumed to be $35, and the standard deviation for female consumers is assumed to be $20.

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)? which is 67.03

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).

Reference no: EM13617475

Questions Cloud

Make a scatter plot of this data which point is an outlier : here is data withnbspynbspas the response variable. xy

Determine the present value of an annuity due of 1000 per : determine the present value of an annuity due of 1000 per year at 10 years discounted back to the present at an annual

A piston with mass m 20 kg in a car engine is in vertical : a piston with mass m 2.0 kg in a car engine is in vertical simple harmonic motion with amplitude a 5.0 cm. if the

Assume that in 2010 a gold dollar minted in 1885 sold for : assume that in 2010 a gold dollar minted in 1885 sold for 135000. for this to have been true what rate of return did

What is the point estimate of the difference between the : the average expenditure on valentines day was expected to be 100.89 usa today february 13 2006. do male and female

One year ago you purchased a stock at a price of 3349 the : one year ago you purchased a stock at a price of 33.49. the stock pays quarterly dividends of 0.20 per share. today the

For a month following a presidential illness very few homes : 1. for a month following a presidential illness very few homes were sold. afterwards the realty business returned to

If you deposited 1000 with an annual interest rate of 16 : calculate the amount of money that will be in each of the following accounts at the end of the given deposit periodthe

Determine the mass flow rate of condensor cooling water in : water is the working fluid in an ideal rankine cylce. saturated vapors enters the turbine at 16mpa and the condensor

User Account

All Pages