1. Assignment 1: Discussion
Using one of the two formulas cited in this module calculate the
correlation coefficient using the following values presented
below. Once you have completed your calculation, discuss the
following: Is there a statistically significant correlation between
customer service attitude scores and number of overtime hours?
State the research question and testable hypothesis. Interpret,
discuss, and support your findings with at least two other
classmates.
Customer Service Attitude Scores
OT Hours
5
1
10
6
5
2
11
8
12
5
4
1
3
4
2
6
6
5
1
2
By

2. Friday, February 22, 2013
, post to the
Discussion Area
Assignment 2: T-Test
By
Tuesday, February 26, 2013
, post your assignment to the
M2: Assignment 2 Dropbox
. Any conclusion drawn for the t-test statistical process is only
as good as the research question asked and the null hypothesis
formulated. T-tests are only used for two sample groups, either
on a pre post-test basis or between two samples (independent or
dependent). The t-test is optimized to deal with small sample
numbers which is often the case with managers in any business.
When samples are excessively large the t test becomes difficult
to manage due to the mathematical calculations involved.
Calculate the “t” value for independent groups for the following
data using the formula presented in the module. Check the
accuracy of your calculations. Using the raw measurement data
presented above, determine whether or not there exists a
statistically significant difference between the salaries of
female and male human resource managers using the appropriate
t-test. Develop a research question, testable hypothesis,
confidence level, and degrees of freedom. Draw the appropriate
conclusions with respect to female and male HR salary levels.
Report the required “t” critical values based on the degrees of
freedom. Your response should be 2-3 pages.
Salary Level
Female HR Directors
Male HR Directors
$50,000
$58,000

3. $75,000
$69,000
$72,000
$73,000
$67,000
$67,000
$54,000
$55,000
$58,000
$63,000
$52,000
$53,000
$68,000
$70,000
$71,000
$69,000
$55,000
$60,000
*Do not forget what we all learned in high school about “0”s