A savings and loan association needs information concerning the checking account balances of its local customers. A random sample of 14 accounts was checked and yielded a mean balance of $664.14 and a standard deviation of $ 297.29. Find a 90% confidence interval for the true mean checking account balance for local customers. 523.43 to 804.85 O b. 493.71 to 834.57 O c. 492.52 to 835.76 O d. 455.65 to 872.63 O a.

MATLAB: An Introduction with Applications
6th Edition
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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A savings and loan association needs
information concerning the checking account
balances of its local customers. A random
sample of 14 accounts was checked and yielded
a mean balance of $664.14 and a standard
deviation of $ 297.29. Find a 90% confidence
interval for the true mean checking account
balance for local customers.
O a.
O b.
O c.
O d.
523.43 to 804.85
493.71 to 834.57
492.52 to 835.76
455.65 to 872.63
Transcribed Image Text:A savings and loan association needs information concerning the checking account balances of its local customers. A random sample of 14 accounts was checked and yielded a mean balance of $664.14 and a standard deviation of $ 297.29. Find a 90% confidence interval for the true mean checking account balance for local customers. O a. O b. O c. O d. 523.43 to 804.85 493.71 to 834.57 492.52 to 835.76 455.65 to 872.63
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