Question 8A 95% confidence interval for the mean population weight of male college freshman is calculatedfrom a random sample of 50, and the confidence interval is (162,198) pounds. Which is the correctinterpretation of the confidence interval?95% of the time the interval (162, 198) contains the true population mean weight of college freshman.95% of the time the mean weight of male college freshman is between 162 Ibs and 198 Ibs.95% of the time the interval (162, 198) contains the true population mean weight of male college freshman.

We have given that Sample size n =50 95% confidence interval. (162 ,198)

Answered: Question 8 A 95% confidence interval…

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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A sample of freshman takes a reading comprehension test and their scores are summarized below. Sample scores: 16, 8, 8, 6, 9, 11, 13, 9, 10 a. if the mean for the general population on this test is m=12, can you conclude that this sample is significantly different from the population. Test with a=.05 b. Calculate a 90% confidence interval around your mean.
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Use the sample information. X = 40, 0 = 4, and n= 20 to calculate the following confidence intervals assuming the sample is from a normal population. A. 90% confidence from____to____ (Round 4 decimal places.) B. 95% confidence interval is from_____to_____ (Round 4 decimal places.) C. 99% confidence interval is from______to_____ (Round 4 decimal places.) D. Describe how the intervals change as you increase the confidence level. A. The interval gets narrower as the confidence level increases B. The interval gets wider as a confidence level decreases C. The interval gets wider as a confidence level increases D. The interval stays the same as the confidence level increases
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