You and your friend decide to construct a 95 percent confidence intervals for a given population mean. You wind up taking a sample of 49 random observations while your friend sample is made up of 36 random observations. Which of the following is true. A.) the total length of your confidence interval estimate is wider. B.) the total length of your confidence interval estimate is narrower. C.) your interval has a greater degree of confidence. D.) your friends interval has a greater degree of confidence

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Please answer all. Thank you. You and your friend decide to construct a 95 percent confidence intervals for a given population mean. You wind up taking a sample of 49 random observations while your friend sample is made up of 36 random observations. Which of the following is true. A.) the total length of your confidence interval estimate is wider. B.) the total length of your confidence interval estimate is narrower. C.) your interval has a greater degree of confidence. D.) your friends interval has a greater degree of confidence. 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 50. B.) wider when the sample proportion is 0.50 than when the sample proportion is 0.20 C.) wider for 90 percent confidence than for 95 percent D.) narrower for 99 percent confidence than for 95 percent
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