According to the IRS, individuals filing federal income tax returns prior to March 31 received an average refund of $1,074 in 2018. 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). a. A researcher suggests that a reason individuals wait until the last five days is that on average these individuals receive lower refunds than do early filers. Develop appropriate hypotheses such that rejection of Ho will support the researcher's contention. Ho: µ is - select your answer - Ha: µ is - Select your answer - b. For a sample of 400 individuals who filed a tax return between April 10 and 15, the sample mean refund was $910. Based on prior experience a population standard deviation of o = $1,600 may be assumed. What is the p-value (to 4 decimals)? c. Using a = 0.05, can you conclude that the population mean refund for "last minute" filers is less than the population mean refund for early filers? - Select your answer - d. Repeat the preceding hypothesis test using the critical value approach.

According to the IRS, individuals filing federal income tax returns prior to March 31 received an average refund of $1,074 in 2018. 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). a. A researcher suggests that a reason individuals wait until the last five days is that on average these individuals receive lower refunds than do early filers. Develop appropriate hypotheses such that rejection of Ho will support the researcher's contention. Ho: µ is - select your answer - Ha: µ is - Select your answer - b. For a sample of 400 individuals who filed a tax return between April 10 and 15, the sample mean refund was $910. Based on prior experience a population standard deviation of o = $1,600 may be assumed. What is the p-value (to 4 decimals)? c. Using a = 0.05, can you conclude that the population mean refund for "last minute" filers is less than the population mean refund for early filers? - Select your answer - d. Repeat the preceding hypothesis test using the critical value approach.

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Description: According to the IRS, individuals filing federal income tax returns prior to March 31 received an average refund of $1,074 in 2018. Consider the population of"last-minute" filers who mail their tax return during the last five days of the income tax

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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