An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within 1.4 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 1.6 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 9% of the sample mean? within 10% of the sample mean? Explain. f tha Ctandard la wmal Tabla Clisl, bara aftha Ctanerd lermalTabla (a) The minimum sample size required to construct a 90% confidence interval is students. (Round up to the nearest whole number.)
An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within 1.4 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 1.6 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 9% of the sample mean? within 10% of the sample mean? Explain. f tha Ctandard la wmal Tabla Clisl, bara aftha Ctanerd lermalTabla (a) The minimum sample size required to construct a 90% confidence interval is students. (Round up to the nearest whole number.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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