In a random sample of 20 people, the mean commute time to work was 34.9 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use at-distribution to construct a 80% confidence interval for the population mean µ. What is the margin of error of µ? Interpret the results.The confidence interval for the population mean μ is ().(Round to one decimal place as needed.) Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed.c = 0.95, x= 13.2, s=0.61, n = 13(Round to one decimal place as needed.)

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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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Construct the indicated confidence interval for the population mean using the t-distribution. Assume the population is normally distributed. c=0.95, x=12.9, s=4.0 n=5
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a hamburger chain sells hamburger. A random sample of 25 hamburger is taken and each is weighed. the mean of this sample is 0.26 pound and the standard deviation of 0.03 pound. Suppose you you were asked to find the 95% confidence interval. what MARGIN of error should you use? Use the multiplier t*= 2.064 to calculate and round your answer to the three decimal places A. 0.061 B. 0.006 C. 0.107 D. 0.012
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