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According to the Internal Revenue Service, the length of time for an individual to complete (learn, prepare copy, assemble, and send) IRS Form 1040 is normally distributed with a mean of 12.72 hours (without any attached schedules). Suppose the standard deviation is 1.1 hours. 1. If one taxpayer is randomly selected, what is the probability that they took more than 13.02 hours to complete form 1040? o What distribution will you use to calculate this probability? NO o List the z-scores needed to calculate the result. If there is more than one z-score, separate the values with a comma. chance that a randomly selected taxpayer took longer o There is a than 13.02 hours to complete their tax return. 2. If 65 taxpayers are randomly selected, what is the probability that, on average, they took more than 13.02 hours to complete form 1040? o What distribution will you use to calculate this probability? NO o List the z-scores needed to calculate the result. If there is more than one z-score, separate the values with a comma. chance that a random sample of 65 taxpayers took o There is a longer than 13.02 hours to complete their tax returns, on average.

According to the Internal Revenue Service, the length of time for an individual to complete (learn, prepare copy, assemble, and send) IRS Form 1040 is normally distributed with a mean of 12.72 hours (without any attached schedules). Suppose the standard deviation is 1.1 hours. 1. If one taxpayer is randomly selected, what is the probability that they took more than 13.02 hours to complete form 1040? o What distribution will you use to calculate this probability? NO o List the z-scores needed to calculate the result. If there is more than one z-score, separate the values with a comma. chance that a randomly selected taxpayer took longer o There is a than 13.02 hours to complete their tax return. 2. If 65 taxpayers are randomly selected, what is the probability that, on average, they took more than 13.02 hours to complete form 1040? o What distribution will you use to calculate this probability? NO o List the z-scores needed to calculate the result. If there is more than one z-score, separate the values with a comma. chance that a random sample of 65 taxpayers took o There is a longer than 13.02 hours to complete their tax returns, on average.

MATLAB: An Introduction with Applications
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 Internal Revenue Service, the length of time for an individual to complete (learn, prepare copy, assemble, and send) IRS Form 1040 is normally distributed with a mean of 12.72 hours (without any attached schedules). Suppose the standard deviation is 1.1 hours. 1. If one taxpayer is randomly selected, what is the probability that they took more than 13.02 hours to complete form 1040? - What distribution will you use to calculate this probability? N( _____ , _____ ) - List the z-scores needed to calculate the result. If there is more than one z-score, separate the values with a comma. _____ - There is a _____ chance that a randomly selected taxpayer took longer than 13.02 hours to complete their tax return. 2. If 65 taxpayers are randomly selected, what is the probability that, on average, they took more than 13.02 hours to complete form 1040? - What distribution will you use to calculate this probability? N( _____ , _____ ) - List the z-scores needed to calculate the result. If there is more than one z-score, separate the values with a comma. _____ - There is a _____ chance that a random sample of 65 taxpayers took longer than 13.02 hours to complete their tax returns, on average.
Transcribed Image Text:According to the Internal Revenue Service, the length of time for an individual to complete (learn, prepare copy, assemble, and send) IRS Form 1040 is normally distributed with a mean of 12.72 hours (without any attached schedules). Suppose the standard deviation is 1.1 hours. 1. If one taxpayer is randomly selected, what is the probability that they took more than 13.02 hours to complete form 1040? - What distribution will you use to calculate this probability? N( _____ , _____ ) - List the z-scores needed to calculate the result. If there is more than one z-score, separate the values with a comma. _____ - There is a _____ chance that a randomly selected taxpayer took longer than 13.02 hours to complete their tax return. 2. If 65 taxpayers are randomly selected, what is the probability that, on average, they took more than 13.02 hours to complete form 1040? - What distribution will you use to calculate this probability? N( _____ , _____ ) - List the z-scores needed to calculate the result. If there is more than one z-score, separate the values with a comma. _____ - There is a _____ chance that a random sample of 65 taxpayers took longer than 13.02 hours to complete their tax returns, on average.
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