A survey of 25 randomly selected customers found the ages shown (in years). The mean is 31.64 years and the standard deviation is 9.62 years. a) What is the standard error of the mean? b) How would the standard error change if the sample size had been 400 instead of 25? (Assume that the sample standard deviation didn't change.) a) The standard error of the mean is (Round to two decimal places as needed.) b) How would the standard error change if the sample size was 400 instead of 25 with the same sample standard deviation? Select the correct choice below and fil in any answer boxes within your choice. OA. The standard error would increase. The new standard error would be times the old. OB. The standard error would decrease. The new standard error would be the old standard error divided by O. The standard error would not change.

A survey of 25 randomly selected customers found the ages shown (in years). The mean is 31.64 years and the standard deviation is 9.62 years. a) What is the standard error of the mean? b) How would the standard error change if the sample size had been 400 instead of 25? (Assume that the sample standard deviation didn't change.) a) The standard error of the mean is (Round to two decimal places as needed.) b) How would the standard error change if the sample size was 400 instead of 25 with the same sample standard deviation? Select the correct choice below and fil in any answer boxes within your choice. OA. The standard error would increase. The new standard error would be times the old. OB. The standard error would decrease. The new standard error would be the old standard error divided by O. The standard error would not change.

Name: 16 34 41 21 340A survey of 25 randomly selected customers found the a
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Description: 16 34 41 21 340A survey of 25 randomly selected customers found the ages shown (in years). The mean is 31.64 years and the standard deviation is 9.62 years.a) What is the standard error of the mean?38 43 26 43 20b) How would the standard error chang

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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