3.The heights (in inches) of adult males in the United States are believed to be Normally distributed with mean u. The average height of a random sample of 25 American adult males is found to be xx = 69.72 inches, and the standard deviation of the 25 heights is found to be s = 4.15. A 90% confidence interval for µ is O a. 69.72 ± 1.09 O b. 69.72 t 1.37 c. 69.72 t 1.42
3.The heights (in inches) of adult males in the United States are believed to be Normally distributed with mean u. The average height of a random sample of 25 American adult males is found to be xx = 69.72 inches, and the standard deviation of the 25 heights is found to be s = 4.15. A 90% confidence interval for µ is O a. 69.72 ± 1.09 O b. 69.72 t 1.37 c. 69.72 t 1.42
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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