a. State the researcher’s null and alternative hypothesis 1. Individuals filing federal income tax returns prior to March 31 received an average refund of $1056. Consider the population of last minute filers who mail their tax return “late” in April. A researcher suggests that a reason individuals wait until the last minute is that on average these individuals receive lower refunds than do early filers. For a sample of 400 individuals who filed a tax return in April, the sample mean refund was $910. Based on prior experience a population standard deviation of σ = $1600 may be assumed.a. State the researcher’s null and alternative hypothesis.

The hypothesized mean is 1,056.

Answered: State the researcher’s null and…

Math

Statistics

State the researcher’s null and alternative hypothesis

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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a. State the researcher’s null and alternative hypothesis

1. Individuals filing federal income tax returns prior to March 31 received an average refund of $1056. Consider the population of last minute filers who mail their tax return “late” in April. A researcher suggests that a reason individuals wait until the last minute is that on average these individuals receive lower refunds than do early filers. For a sample of 400 individuals who filed a tax return in April, the sample mean refund was $910. Based on prior experience a population standard deviation of σ = $1600 may be assumed.

a. State the researcher’s null and alternative hypothesis.

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