Let X denote the amount of time a randomly selected customer spends on hold with some insurance company. Suppose X follows a distribution with a mean of 8 hours and a variance of 16 hours. The population density curve for X is shown below. a) Is the population normally distributed? Explain. b) If you randomly pick twenty-five customers, describe the sampling distribution of the average time spent in the store; provide the mean, standard deviation, and shape. c) If you randomly pick one hundred customers, describe the sampling distribution of the average time spent in the store; provide the mean, standard deviation, and shape.
Let X denote the amount of time a randomly selected customer spends on hold with some insurance company. Suppose X follows a distribution with a mean of 8 hours and a variance of 16 hours. The population density curve for X is shown below. a) Is the population normally distributed? Explain. b) If you randomly pick twenty-five customers, describe the sampling distribution of the average time spent in the store; provide the mean, standard deviation, and shape. c) If you randomly pick one hundred customers, describe the sampling distribution of the average time spent in the store; provide the mean, standard deviation, and shape.
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.3: Special Probability Density Functions
Problem 36E
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Let X denote the amount of time a randomly selected customer spends on hold with some insurance company. Suppose X follows a distribution with a
mean of 8 hours and a variance of 16 hours. The population density curve for X is shown below.
a) Is the population
b) If you randomly pick twenty-five customers, describe the sampling distribution of the average time spent in the store; provide the mean, standard deviation, and shape.
c) If you randomly pick one hundred customers, describe the sampling distribution of the average time spent in the store; provide the mean, standard deviation, and shape.
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