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A random sample of 50 recent patient records at a

A random sample of 50 recent patient records at a clinic shows that the average billing per visit was $53.01 and the standard deviation was $16.48.

a. Find the 95% confidence interval for the mean and interpret it.

b. Find the 99% confidence interval.

c. Find the one-sided 95% confidence interval specifying at least some level of billing.

a. Find the 95% confidence interval for the mean and interpret it.

b. Find the 99% confidence interval.

c. Find the one-sided 95% confidence interval specifying at least some level of billing.

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