Homework 3

Part 2

Ho Average of salaries = 6,200

Ha Average of salaries =/ 6,200

Sample mean - 5,502

P Value is less than .05 therefore reject Null Hypothesis

Part 3

Ho Attrition = .12

Ha Attrition =/ .12

Sample Mean .171

Essentially 0

Reject the Null Hypothesis because the p-value is much smaller than .05

Part 4

Ho - Is the attrition rate independent of department

Ha - Does the department affect the attrition rate

Research and Developement

Chi-Square - 9.844

df - 2

P - .007

Reject the Null Hypothesis because P is less then .05