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Bob Nale is the owner of Nale's Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 2.50 gallons. From his records, he selects a random sample of 55 sales and finds the mean number of gallons sold is 5.40. a. What is the point estimate of the population mean? (Round your answer to 2 decimal places.) Point estimate

Bob Nale is the owner of Nale's Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 2.50 gallons. From his records, he selects a random sample of 55 sales and finds the mean number of gallons sold is 5.40. a. What is the point estimate of the population mean? (Round your answer to 2 decimal places.) Point estimate

MATLAB: An Introduction with Applications
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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Bob Nale is the owner of Nale's Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 2.50 gallons. From his records, he selects a random sample of 55 sales and finds the mean number of gallons sold is 5.40. a. What is the point estimate of the population mean? (Round your answer to 2 decimal places.) Point estimate b. Develop a 90% confidence interval for the population mean. (Use z Distribution Table.) (Round z-score and your answers to 2 decimal places.) Confidence interval and
Transcribed Image Text:Bob Nale is the owner of Nale's Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 2.50 gallons. From his records, he selects a random sample of 55 sales and finds the mean number of gallons sold is 5.40. a. What is the point estimate of the population mean? (Round your answer to 2 decimal places.) Point estimate b. Develop a 90% confidence interval for the population mean. (Use z Distribution Table.) (Round z-score and your answers to 2 decimal places.) Confidence interval and
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