An irate patient complained that the cost of a doctors visit was too high. She randomly surveyed 20 other patients and found that the mean amount of money they spent on each doctors visit was $44.80. The standard deviation of the sample was $3.53. Find the 95% confidence interval of the population mean.

AGRICULTURAL STATISTICS AND ECONOMICS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

An irate patient complained that the cost of a doctor’s visit was too high. She randomly surveyed 20 other patients and found that the mean amount of money they spent on each doctor’s visit was $44.80. The standard deviation of the sample was $3.53. Find the 95% confidence interval of the population mean.

A	$43.15-$46.45
B	$44.53-$48.21
C	$42.65-$48.25
D	$43.15-$48.25

Explanation:

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AGRICULTURAL STATISTICS AND ECONOMICS