A random sample of companies in electric utilities (I), financial services (II), and food processing (III) gave the following information regarding annual profits per employee (units in thousands of dollars). I II III 49.5 55.4 39.0 43.6 25.2 37.6 32.3 41.9 10.4 27.1 29.2 32.4 38.7 39.1 15.5 36.7 42.5 20.3 Shall we reject or not reject the claim that there is no difference in population mean annual profits per employee in each of the three types of companies? Use a 1% level of significance.
A random sample of companies in electric utilities (I), financial services (II), and food processing (III) gave the following information regarding annual profits per employee (units in thousands of dollars). I II III 49.5 55.4 39.0 43.6 25.2 37.6 32.3 41.9 10.4 27.1 29.2 32.4 38.7 39.1 15.5 36.7 42.5 20.3 Shall we reject or not reject the claim that there is no difference in population mean annual profits per employee in each of the three types of companies? Use a 1% level of significance.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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A random sample of companies in electric utilities (I), financial services (II), and food processing (III) gave the following information regarding annual profits per employee (units in thousands of dollars).
I | II | III |
49.5 | 55.4 | 39.0 |
43.6 | 25.2 | 37.6 |
32.3 | 41.9 | 10.4 |
27.1 | 29.2 | 32.4 |
38.7 | 39.1 | 15.5 |
36.7 | 42.5 | |
20.3 |
Shall we reject or not reject the claim that there is no difference in population mean annual profits per employee in each of the three types of companies? Use a 1% level of significance.
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