Individuals filing federal income tax returns prior to March 31 received an average refund of $1078. Consider the population of “last-minute” filers who mail their tax return during the last five days of the income tax period (typically April 10 to April 15). For a sample of 380 individuals who filed a tax return between April 10 and 15, the sample mean refund was $820. Based on prior experience, a population standard deviation of σ = $1700 may be assumed. At α = 0.05, what is your conclusion?
Individuals filing federal income tax returns prior to March 31 received an average refund of $1078. Consider the population of “last-minute” filers who mail their tax return during the last five days of the income tax period (typically April 10 to April 15). For a sample of 380 individuals who filed a tax return between April 10 and 15, the sample mean refund was $820. Based on prior experience, a population standard deviation of σ = $1700 may be assumed. At α = 0.05, what is your conclusion?
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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- Individuals filing federal income tax returns prior to March 31 received an average refund of $1078. Consider the population of “last-minute” filers who mail their tax return during the last five days of the income tax period (typically April 10 to April 15). For a sample of 380 individuals who filed a tax return between April 10 and 15, the sample
mean refund was $820. Based on prior experience, a population standard deviation of σ = $1700 may be assumed.
At α = 0.05, what is your conclusion?
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