Purchase Solution

# Two Populations

Not what you're looking for?

The email usage for two different plants of a large company was compared at level of significance 0.05. A sample of 50 employees was selected at each plant. The mean number of email messages sent per employee for one plant was 15.5 per week and the standard deviation was 5.0. For the other plant, the mean was 18.4 and the standard deviation was 3.6. For the test of equal population means versus unequal population means, the absolute value for the computed test statistic, the critical values, and the p-value respectively are: Which one?
a) 2.33, + - 1.96, 0.0008
b) 3.33, + - 2.33, 0.0008
c) 3.33, + - 1.96, 0.0008
d) 2.33, + - 1.65, 0.0004

##### Solution Summary

The solution provides a comprehensive answer to the question going into a lot of details. The solution satisfies all the requirements of the question.

##### Solution Preview

The difference of mean is
Dm=18.4-15.5=2.9
The standard error of the difference is ...

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.