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Burka
[1]
2 years ago
15
A random sample of 31 charge sales showed a sample standard deviation of $50. a 90% confidence interval estimate of the populati
on standard deviation is
Mathematics
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answer:
Marysya12
[62]
2 years ago
3
0
The
confidence interval of a standard deviation is given by:
Given a sample size of 31 charge sales, the degree of freedom is 30 and for 90% confidence interval,
Therefore, the 90% confidence interval for the standard deviation is given by
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