Statistics for Business and Economics
Statistics for Business and Economics
8th Edition
ISBN: 9780132745659
Author: Paul Newbold, William Carlson, Betty Thorne
Publisher: PEARSON
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Chapter 2, Problem 46E
To determine

Identify the variance and standard deviation for locations 2, 3, and 4.

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Consider a sample with data values of 26, 24, 23, 15, 32, 36, 28, and 24. Compute the range, interquartile range, variance, and standard deviation. Round to 2 decimals, if necessary. Range Interquartile range Variance Standard deviation
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18. An insurance agent has claimed that the average age of policy-holders who insure through him is less than the average for all agents, which is 30-5 years. A random sample of 100 policy-holders who had insured through him gave the following age distribution : Age last birthday 16-20 21-25 26-30 31-35 36-40 No. of persons 12 22 20 30 16 : Calculate the arithmetic mean and standard deviation of this distribution and use these values to test his claim at the 5% level of significance. You are given that Z (1-645) = (0-95.
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