Mathematics, 29.11.2019 03:31 moneygod46chapo1712
Asimple random sample with n=54 provided a sample mean of 22.5 and a sample standard deviation of 4.4.
a. develop a 90% confidence interval for the population mean.
b. develop a 95% confidence interval for the population mean.
c. develop a 99% confidence interval for the population mean.
d. what happens to the margin of error and the confidence interval as the confidence level is increased?
Answers: 3
Mathematics, 21.06.2019 19:30, allicat133
Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.
Answers: 1
Asimple random sample with n=54 provided a sample mean of 22.5 and a sample standard deviation of 4....
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