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
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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100%
Question 7 with diagram and clear explanation
![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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb58d78be-ac07-4ce8-9d15-382cef4c681b%2F1365aec0-a6ed-4c78-924d-6150248341dd%2Fus7gvas_processed.jpeg&w=3840&q=75)
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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