2.10 You and your friend declde to construct 95% confidence intervals for a givenpopulation mean. You wind up taking a sample of 49 random observations while yourfriend's sample Is made up of 36 random observations. Which of the following is true?a. The total width of your confidence interval estimate is widerb. Your friend's interval has a greater degree of confidenceC. The total width of your confidence interval estimate is narrowerd. Your interval has a greater degree of confidenceCalculations:2.11 The width of a confidence Interval for a proportion will be:a. wider for a sample of size 100 than for a sample of size 50b. wider for 90% confidence than for 95% confidenceC.narrower for 99% confidence than for 95% confidenced. wider when the sample proportion is 0.50 than when the sample proportion is0.20Calculations2.12 A sample of 50 students was taken from the local university. These students spent anaverage of R170 on books this semester, with a standard devation of R25.50. A 95%confidence interval for the average spent on books for all students would bela. None of these is Correctb. 170 plus or minus 5.95170 plus or minus 3.462d. 170 plus or minus 8.42Calculations.

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O You and your friend decide to construct 95% confidence intervals for a given population mean. You wind up taking a sample of 49 random observations while your friend's sample is made up of 36 random observations. Which of the following is true? a. The total width of your confidence interval estimate is wider b. Your friend's interval has a greater degree of confidence c. The total width of your confidence interval estimate is narrower d. Your interval has a greater degree of confidence Calculations:

O You and your friend decide to construct 95% confidence intervals for a given population mean. You wind up taking a sample of 49 random observations while your friend's sample is made up of 36 random observations. Which of the following is true? a. The total width of your confidence interval estimate is wider b. Your friend's interval has a greater degree of confidence c. The total width of your confidence interval estimate is narrower d. Your interval has a greater degree of confidence Calculations:

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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