A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 110, and the sample standard deviation,s, is found to be 10.(a) Construct an 80% confidence interval about u if the sample size, n, is 15.(b) Construct an 80% confidence interval about u if the sample size, n, is 28.(c) Construct a 90% confidence interval about u if the sample size, n, is 15.(d) Could we have computed the confidence intervals in parts (a)-(c) if the population had not been normally distributed?Click the icon to view the table of areas under the t-distribution.(a) Construct an 80% confidence interval about u if the sample size, n, is 15.Lower bound: ; Upper bound:(Use ascending order. Round to one decimal place as needed.) Table of t-Distribution Areas-Area inright tailTable VIt-DistributionArea in Right Taildf0.250.200.150.100.050.0250.020.010.0050.00250.0010.000512.706127.321318.30922.32711.3761.9633.0786.31415.89431.82163.6579.9255.8414.6041.000636.6191.3861.2501.1901.15614.0897.4535.5982.9206.9650.8160.7650.7411.0610.9780.9411.8861.6381.5334.3033.1822.7764.8493.4822.9992.75731.59912.9242.3532.1322.0154.5413.7473.36510.2157.1735.89348.61050.7270.9201.4762.5714.0324.7736.8691.1341.1192.4472.3653.1432.9982.8962.8212.7640.7180.9063.7075.9591.4401.4151.3971.3831.3721.9432.6122.5172.4492.3982.3594.3175.2083.4993.3553.2505.4085.0414.7814.58770.7110.8961.8954.0292.3062.2622.2284.7854.5014.2974.1441.10880.706 0.88990.7030.7000.8830.8791.8601.8333.8333.6901.100101.0931.8123.1693.5810.6973.4971.3631.3561.3503.1063.0553.012114.0250.8760.8730.8701.0881.7961.7821.7712.2011.0831.0792.3282.3032.7182.6812.6504.4374.3184.221120.6952.1793.4283.930130.6942.1602.2823.3723.85223

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A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 110, and the sample standard deviation, s, is found to be 10. (a) Construct an 80% confidence interval about µ if the sample size, n, is 15. (b) Construct an 80% confidence interval about u if the sample size, n, is 28. (c) Construct a 90% confidence interval about u if the sample size, n, is 15. (d) Could we have computed the confidence intervals in parts (a)-(c) if the population had not been normally distributed? E Click the icon to view the table of areas under the t-distribution. (a) Construct an 80% confidence interval about u if the sample size, n, is 15. Lower bound: ; Upper bound: (Use ascending order. Round to one decimal place as needed.)

A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 110, and the sample standard deviation, s, is found to be 10. (a) Construct an 80% confidence interval about µ if the sample size, n, is 15. (b) Construct an 80% confidence interval about u if the sample size, n, is 28. (c) Construct a 90% confidence interval about u if the sample size, n, is 15. (d) Could we have computed the confidence intervals in parts (a)-(c) if the population had not been normally distributed? E Click the icon to view the table of areas under the t-distribution. (a) Construct an 80% confidence interval about u if the sample size, n, is 15. Lower bound: ; Upper bound: (Use ascending order. Round to one decimal place as needed.)

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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