Answered: According to the 2016 Consumer…

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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Transcribed Image Text:According to the 2016 Consumer Expenditure Survey, Americans spend an average of $1,124 on cellular phone service annually (U.S. Bureau of Labor Statistics website). Suppose that we wish to determine if there are differences in cellular phone expenditures by age group. Therefore, samples of 10 consumers were selected for three age groups (1834, 35- 44, 45 and older). The annual expenditure for each person in the sample is provided in the table below. Click on the datafile logo to reference the data. DATA file 35-44 969 434 1,792 1,500 1,277 1,056 1,922 1,350 18 - 34 1,355 115 1,456 2,045 1,621 994 1,937 1,200 1,567 1,390 a. Compute the mean, variance, and standard deviation for each of these three samples. Round your answers to one decimal place. 18-34 35-44 45+ 1,586 1,415 45 and Older 1,135 956 400 1,374 1,244 825 763 1,192 1,305 1,510 Mean = Variance Standard Deviation b. What observations can be made based on these data? The age group that spends the least amount on cellular phone service is - Select your answer and the age group that spends the biggest amount on cellular phone service is Select your answer - V

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