4.8 : i've posted an image of the question. 4.8 Financial experts say retirement accounts are one of the besttools for saving and investing for the future. Are millennials and GenXers financially prepared for the future? A survey of American adultsconducted by INSIDER and Morning Consult revealed the following:HAS A RETIREMENTSAVINGS ACCOUNTAGE GROUPYesNoMillennials579628Gen X599532Source: Data extracted from “Millennials are delusional about the future,but they aren't the only ones," bit.ly/2KDeDK9.a. Give an example of a simple event.b. Give an example of a joint event.c. What is the complement of “Has a retirement savings account"?d. Why is "Millennial and has a retirement savings account" ajoint event?

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Answered: 4.8 Financial experts say retirement…

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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According to the IRS, individuals filing federal income tax returns prior to March 31 received an average refund of $1079 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 H0 will support the researcher's contention. : is greater than or equal to 1,079 : is less than 1,079 b. For a sample of 400 individuals who filed a tax return between April 10 and 15, the sample mean refund was $920. Based on prior experience a population standard deviation of =1600 may be assumed. What is the -value (to 4 decimals)?
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