An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within 1.7 years of the population mean. Assume the population of ages is normally...

Extracted text: An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within 1.7 years of the population mean. Assume the population of ages is normally distributed. (a) Determine the minimum sample size required to construct a 90% confidence interval for the population mean. Assume the population standard deviation is 1.8 years. (b) The sample mean is 20 years of age. Using the minimum sample size with a 90% level of confidence, does it seem likely that the population mean could be within 10% of the sample mean? within 11% of the sample mean? Explain. Click here to view page 1 of the Standard Normal Table. Click here to view page 2 of the Standard Normal Table. (a) The minimum sample size required to construct a 90% confidence interval is 4 students. (Round up to the nearest whole number.) (b) The 90% confidence interval is (O.). It V seem likely that the population mean could be within 10% of the sample mean because 10% off from the sample mean would fall V the confidence interval. It likely that the population mean could be within 1 ean because 11% off from the sample mean would fall V the confidence interval. (Round to two decimal places as needed.) does does not


Extracted text: An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within 1.7 years of the population mean. Assume the population of ages is normally distributed. (a) Determine the minimum sample size required to construct a 90% confidence interval for the population mean. Assume the population standard deviation is 1.8 years. (b) The sample mean is 20 years of age. Using the minimum sample size with a 90% level of confidence, does it seem likely that the population mean could be within 10% of the sample mean? within 11% of the sample mean? Explain. Click here to view page 1 of the Standard Normal Table. Click here to view page 2 of the Standard Normal Table. (a) The minimum sample size required to construct a 90% confidence interval is 4 students. (Round up to the nearest whole number.) (b) The 90% confidence interval is (O.D. It V seem likely that the population mean could be within 10% of the sample mean because 10% off from the sample mean would fall V the confidence interval. It seem likely that the population mean could be within 11% of the sample mean because 11% off from the sample mean would fall (Round to two decimal places as needed.) V the confidence interval. inside outside