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 46 male consumers was $136.75, and the average expenditure in a sample survey of 30 female consumers was $64.68. Based on past surveys, the standard deviation for male consumers is assumed to be $31, and the standard deviation for female consumers is assumed to be $10. The z value is 2.576, Round your answers to 2 decimal places. a. What is the point estimate of the difference between the population mean expenditure for males and the population mean expenditure for females? 71.76 b. At 99% confidence, what is the margin of error? 16.70 c. Develop a 99% confidence interval for the difference between the two population means. 59.60 to 83.92

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 46 male consumers was $136.75, and the average expenditure in a sample survey of 30 female consumers was $64.68. Based on past surveys, the standard deviation for male consumers is assumed to be $31, and the standard deviation for female consumers is assumed to be $10. The z value is 2.576, Round your answers to 2 decimal places. a. What is the point estimate of the difference between the population mean expenditure for males and the population mean expenditure for females? 71.76 b. At 99% confidence, what is the margin of error? 16.70 c. Develop a 99% confidence interval for the difference between the two population means. 59.60 to 83.92

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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