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clcharleston clcharleston
wrote...
Posts: 835
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6 years ago
A random sample of 21 checking accounts at a bank showed an average daily balance of 430 with a standard deviation of 50.
 a. Provide a 95 confidence interval estimate for the variance of the population of the checking accounts.
  b. Provide a 95 confidence interval estimate for the standard deviation of the population of the checking accounts.
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Replies
wrote...
6 years ago
a. 1463.272 to 5213.221
b. 38.253 to 72.203
clcharleston Author
wrote...
6 years ago
Thanks again
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