It has been reported that the average time to download the home page from a government website was 0.9 seconds. Suppose that the download times were normally distributed with a standard deviation of 0.3 seconds. If random samples of 36 download times are selected: (a) Describe the shape of the sampling distribution. How was this determined? (b) Calculate the mean of the sampling distribution of the sample mean. (c) Calculate the standard deviation of the sampling distribution of the sample mean. (d) 80% of the sample means will be between what two values that are symmetrically distributed around the population mean? (e) What is the probability that the sample mean will be less than 0.80 seconds?
It has been reported that the average time to download the home page from a government website was 0.9 seconds. Suppose that the download times were normally distributed with a standard deviation of 0.3 seconds. If random samples of 36 download times are selected: (a) Describe the shape of the sampling distribution. How was this determined? (b) Calculate the mean of the sampling distribution of the sample mean. (c) Calculate the standard deviation of the sampling distribution of the sample mean. (d) 80% of the sample means will be between what two values that are symmetrically distributed around the population mean? (e) What is the probability that the sample mean will be less than 0.80 seconds?
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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VIEWStep 2: Describe the shape of sampling distribution
VIEWStep 3: Calculate mean of sampling distribution of sample mean
VIEWStep 4: Calculate standard deviation of sampling distribution of sample mean
VIEWStep 5: To find the values between which 80% of the sample means will lie
VIEWStep 6: Calculate the probability that the sample mean will be less than 0.80
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