A random sample of 50 four-year-olds attending day care centers pro- vided a yearly tuition average of $3987 and the population standard deviation of $630. a) Find the 90% confidence interval for the population yearly tuition average of 50 four-year-olds attending day care centers. b) Estimate the population yearly tuition average of 50 four-year-olds attending day care centers using a 98% UCB. c) If you wish to estimate population tuition average of four-year-olds attend- ing day care centers correct to within $4, with probability equal to .95, how many observations should be included in your sample? No hand written solution and no image
A random sample of 50 four-year-olds attending day care centers pro- vided a yearly tuition average of $3987 and the population standard deviation of $630. a) Find the 90% confidence interval for the population yearly tuition average of 50 four-year-olds attending day care centers. b) Estimate the population yearly tuition average of 50 four-year-olds attending day care centers using a 98% UCB. c) If you wish to estimate population tuition average of four-year-olds attend- ing day care centers correct to within $4, with probability equal to .95, how many observations should be included in your sample? No hand written solution and no image
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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Question
A random sample of 50 four-year-olds attending day care centers pro-
vided a yearly tuition average of $3987 and the population standard deviation of $630.
a) Find the 90% confidence interval for the population yearly tuition average of
50 four-year-olds attending day care centers.
b) Estimate the population yearly tuition average of 50 four-year-olds attending
day care centers using a 98% UCB.
c) If you wish to estimate population tuition average of four-year-olds attend-
ing day care centers correct to within $4, with probability equal to .95, how many
observations should be included in your sample? No hand written solution and no image
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