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7. A rendom sample of Joo cushomera, who viaited a deportment store,spnt an average of #77 at this store . Assume Hhat 6=#19. The 97% confidence interval for the population mean is! a) 74.56 to 79.44 b) 70.18 to 83-82 as c) 73.89 to 80-1) d) 72.88 to 81-12

7. A rendom sample of Joo cushomera, who viaited a deportment store,spnt an average of #77 at this store . Assume Hhat 6=#19. The 97% confidence interval for the population mean is! a) 74.56 to 79.44 b) 70.18 to 83-82 as c) 73.89 to 80-1) d) 72.88 to 81-12

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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mean age of all Business Week readers ata 99% can fidence Level. It is knonn that the standard deviation of ages of all Business Week readers is 9 years.The sample size that mill yield a maximum en or of estimate nithhn 3 years of the population mean is: a) 60 ) ৭7 d) 235 c) 185 7. A rendom sample of Joo cushomera , who viaited a deportment store, spent on average of #77 atthis store Assume that 6=#19. The 97% confidence interval Por the population mean is: a) 74.56 to 79.44 as b) 70.18 to 83.82 c) 73.89 8011 to d) 72.88 to 81-12 Help étv S il ? DEC 1. 8. MacBook Pro
Transcribed Image Text:mean age of all Business Week readers ata 99% can fidence Level. It is knonn that the standard deviation of ages of all Business Week readers is 9 years.The sample size that mill yield a maximum en or of estimate nithhn 3 years of the population mean is: a) 60 ) ৭7 d) 235 c) 185 7. A rendom sample of Joo cushomera , who viaited a deportment store, spent on average of #77 atthis store Assume that 6=#19. The 97% confidence interval Por the population mean is: a) 74.56 to 79.44 as b) 70.18 to 83.82 c) 73.89 8011 to d) 72.88 to 81-12 Help étv S il ? DEC 1. 8. MacBook Pro
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