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A large family-held department store had the business objective of improving ts response to complaints The vanatie ot interest was defined as the between when the complaint was made and when it was resolved Data were colected from 40 complaints that were made in the last year Use he da (a) through (d) below M Click the icon to view the data table . Construct a 95% confidence interval estimate for the population mean number of days between the receipt of a complant and the resoluton of the The 95% confidence interval estimate is from 284 days to 53.1 days (Round to one decimal place as needed) What assumption must you make about the population distribution in order to construct the confidence interval estimate in (a)? OA The number of days to resolve complaints follows the i distribution OB The number of complants per day follows the I distribution OC The number of complainte per day is normally distributed o The number of days to resolve complaints is normally distnbuted 6. Do you thina that the assumption needed in order to construct the conidence interval estimate in (a) s valid? Explain OA Yes, the data suggest the population distrbution approximately foliows the t distribution OB. NO, the data suggest the population distribution is skewed to the right OC Yes. the data suggest the populaton distribution is approximately normal. OD No, the data suggest the population distribution is skewed to the left Complaint Data Days Between Complaint and Resolution of Complaint 7 24 20 19 26 93 10 32 28 64 45 162 34 24 33 18 1 115 69 111 8 12 17 27 45 152 16 7 16 64 26 26 14 26 37 81 49 42 29

A large family-held department store had the business objective of improving ts response to complaints The vanatie ot interest was defined as the between when the complaint was made and when it was resolved Data were colected from 40 complaints that were made in the last year Use he da (a) through (d) below M Click the icon to view the data table . Construct a 95% confidence interval estimate for the population mean number of days between the receipt of a complant and the resoluton of the The 95% confidence interval estimate is from 284 days to 53.1 days (Round to one decimal place as needed) What assumption must you make about the population distribution in order to construct the confidence interval estimate in (a)? OA The number of days to resolve complaints follows the i distribution OB The number of complants per day follows the I distribution OC The number of complainte per day is normally distributed o The number of days to resolve complaints is normally distnbuted 6. Do you thina that the assumption needed in order to construct the conidence interval estimate in (a) s valid? Explain OA Yes, the data suggest the population distrbution approximately foliows the t distribution OB. NO, the data suggest the population distribution is skewed to the right OC Yes. the data suggest the populaton distribution is approximately normal. OD No, the data suggest the population distribution is skewed to the left Complaint Data Days Between Complaint and Resolution of Complaint 7 24 20 19 26 93 10 32 28 64 45 162 34 24 33 18 1 115 69 111 8 12 17 27 45 152 16 7 16 64 26 26 14 26 37 81 49 42 29

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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A large family-held department store had the business objective of improving ts response to complaints The varatie of interest was defined as the n- between when the complaint was made and when it was resolved Data were collected from 40 complaints that were made in the last year Use he dat- (a) through (d) beiow O Click the icon to view the data table a Construct a 95% confidence interval estimate for the population mean number of days between the receipt ofa complant and the resoluton of the cr The 95% confidence interval estimate is from 284 days to 53.1 days (Round to one decimal place as needed) D. What assumption must you make about the population distribution in order to construct the confidence interval estimate in (a)? A The number of days to resolve complaints lollows the I distribution OB The number of complaints per day follows the I distributon OC The number of complainte per day is normally distributed D The number of days to resolve complants is normally distnbuted c. Do you think that the assumption needed in order to construct the confidence interval estimate in (a) is valid? Explain OA Yes, the data suggest the population distribution approximately foliows the t distribution OB No, the data suggest the population distribution is skewed to the night OC Yes. the data suggest the population distribution is approximately normal. OD No, the data suggest the population distribution is skewed to the left Complaint Data Days Between Complaint and Resolution of Complaint 45 32 28 64 7 24 20 19 26 93 10 49 162 24 33 69 16 26 26 37 18 2 27 1 115 34 17 111 7 8 45 152 12 64 81 16 26 42 29 14
Transcribed Image Text:A large family-held department store had the business objective of improving ts response to complaints The varatie of interest was defined as the n- between when the complaint was made and when it was resolved Data were collected from 40 complaints that were made in the last year Use he dat- (a) through (d) beiow O Click the icon to view the data table a Construct a 95% confidence interval estimate for the population mean number of days between the receipt ofa complant and the resoluton of the cr The 95% confidence interval estimate is from 284 days to 53.1 days (Round to one decimal place as needed) D. What assumption must you make about the population distribution in order to construct the confidence interval estimate in (a)? A The number of days to resolve complaints lollows the I distribution OB The number of complaints per day follows the I distributon OC The number of complainte per day is normally distributed D The number of days to resolve complants is normally distnbuted c. Do you think that the assumption needed in order to construct the confidence interval estimate in (a) is valid? Explain OA Yes, the data suggest the population distribution approximately foliows the t distribution OB No, the data suggest the population distribution is skewed to the night OC Yes. the data suggest the population distribution is approximately normal. OD No, the data suggest the population distribution is skewed to the left Complaint Data Days Between Complaint and Resolution of Complaint 45 32 28 64 7 24 20 19 26 93 10 49 162 24 33 69 16 26 26 37 18 2 27 1 115 34 17 111 7 8 45 152 12 64 81 16 26 42 29 14
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