The HR director of a company wishes to study whether there are any differences in the average salaries of employees across three departments. Selecting a random sample of 5 employees from each department, she records their salaries as shown in the table below (as measured in thousands of dollars). Department X Department Y 10 Department Z 9 12 10.5 15 15 12.6 16 16.5 10.9 14.5 15.5 15 12 14 A. State the null and alternative hypothesis. B. Compute the analysis of variance table for the salaries of employees across the departments. (Hint: Copy and paste the table below, then fill in the values). Analysis of Variance Summary Table Sum of Squares (S) Mean Square (MS) Source d.f. F p-Value Between Within (Error) C. At a=0.1, can it be concluded that there is a significant difference in the average salaries of employees across three departments? (Use the n-value method to make vour decision)

The HR director of a company wishes to study whether there are any differences in the average salaries of employees across three departments. Selecting a random sample of 5 employees from each department, she records their salaries as shown in the table below (as measured in thousands of dollars). Department X Department Y 10 Department Z 9 12 10.5 15 15 12.6 16 16.5 10.9 14.5 15.5 15 12 14 A. State the null and alternative hypothesis. B. Compute the analysis of variance table for the salaries of employees across the departments. (Hint: Copy and paste the table below, then fill in the values). Analysis of Variance Summary Table Sum of Squares (S) Mean Square (MS) Source d.f. F p-Value Between Within (Error) C. At a=0.1, can it be concluded that there is a significant difference in the average salaries of employees across three departments? (Use the n-value method to make vour decision)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 6E

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