In developing an interval estimate for a population mean,the interval estimate was 62.84 to 69.46. The populationstandard deviation was assumed to be 6.50, and asample of 100 observations was used. The mean of thesample wasA. 13.24B. 56.34C. 66.15D. 62.96A random sample of 64 observations has a mean of 30.The population variance is assumed to be 9. The 85.3%confidence interval estimate for the population mean (tothe third decimal place) isOA. (29.456, 30.544)OB. (29.383, 30.617)OC. (28.560, 31.440)D. (28.369, 31.631)

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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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In developing an interval estimate for a population mean, the interval estimate was 62.84 to 69.46. The population standard deviation was assumed to be 6.50, and a sample of 100 observations was used. The mean of the sample was A. 13.24 OB. 56.34 C. 66.15 OD. 62.96