A sample of 38 task has been considered and was analyzed. It was found out that the values 28 and 2.3 are obtained for the sample mean and the population standard deviation, respectively. Construct a 98% confidence interval for the population mean. Solve the following questions and express your final answer in 2 decimal places whenever possible. a) upper confidence interval of the population mean Answer b) maximum error of estimate (give the negative, ME)
1) A sample of 38 task has been considered and was analyzed. It was found out that the values 28 and 2.3 are obtained for the sample mean and the population standard deviation, respectively. Construct a 98% confidence interval for the population mean. Solve the following questions and express your final answer in 2 decimal places whenever possible.
a) upper confidence interval of the population mean Answer
b) maximum error of estimate (give the negative, ME)
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2- A sample of 39 task has been considered and was analyzed. It was found out that the values 21 and 2.7 are obtained for the sample mean and the population standard deviation, respectively. Construct a 80% confidence interval for the population mean. Solve the following questions and express your final answer in 2 decimal places whenever possible.
a) upper confidence interval of the population mean Answer
b) lower confidence interval of the population mean
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3-A sample of 38 task has been considered and was analyzed. It was found out that the values 18 and 2.8 are obtained for the sample mean and the population standard deviation, respectively. Construct a 99% confidence interval for the population mean. Solve the following questions and express your final answer in 2 decimal places whenever possible.
a) maximum error of estimate (give the negative, ME)
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