The high price of medicines is a source of major expense for those seniors in the United States who have to pay for these medicines themselves. A random sample of 1600 seniors who pay for their medicines showed that they spent an average of $4300 last year on medicines with a standard deviation of $500. Make a 90% confidence interval for the corresponding population mean. Round your answers to cents.

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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The high price of medicines is a source of major
expense for those seniors in the United States who
have to pay for these medicines themselves. A
random sample of 1600 seniors who pay for their
medicines showed that they spent an average of
$4300 last year on medicines with a standard
deviation of $500. Make a 90% confidence
interval for the corresponding population mean.
Round your answers to cents.
i
to $
i
%24
Transcribed Image Text:The high price of medicines is a source of major expense for those seniors in the United States who have to pay for these medicines themselves. A random sample of 1600 seniors who pay for their medicines showed that they spent an average of $4300 last year on medicines with a standard deviation of $500. Make a 90% confidence interval for the corresponding population mean. Round your answers to cents. i to $ i %24
Determine the most conservative sample size for
the estimation of the population proportion for
the following.
E = 0.022, confidence level = 95%
Round your answer up to the nearest whole
number.
n =
i
Transcribed Image Text:Determine the most conservative sample size for the estimation of the population proportion for the following. E = 0.022, confidence level = 95% Round your answer up to the nearest whole number. n = i
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