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(c) Construct a central 98% confidence interval for u. 4. Repeat each part of the previous problem, except assume 2 is un- known and is estimated by s2: = 9.

(c) Construct a central 98% confidence interval for u. 4. Repeat each part of the previous problem, except assume 2 is un- known and is estimated by s2: = 9.

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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3. Mr. Guo selects a random sample of size n = 16 from a population that is normally distributed. The sample is found to have x = 78 and 0² = 4. I fly (a) Mr. Guo wishes to construct a 98% confidence interval for population mean. Are all conditions met? If not, explain why. the (b) Find an appropriate critical number associated with a central 98% confidence interval. Hint: Which distribution should we use? (c) Construct a central 98% confidence interval for u. 4. Repeat each part of the previous problem, except assume o2 is un- known and is estimated by s² = 9.
Transcribed Image Text:3. Mr. Guo selects a random sample of size n = 16 from a population that is normally distributed. The sample is found to have x = 78 and 0² = 4. I fly (a) Mr. Guo wishes to construct a 98% confidence interval for population mean. Are all conditions met? If not, explain why. the (b) Find an appropriate critical number associated with a central 98% confidence interval. Hint: Which distribution should we use? (c) Construct a central 98% confidence interval for u. 4. Repeat each part of the previous problem, except assume o2 is un- known and is estimated by s² = 9.
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