Population Variance for Maintenance Supervisors
Not what you're looking for?
A maintenance supervisor is comparing the standard version of an instrunctional booklet with one that has claimed to be superior. The experiment is conducted in which 26 technicians are divided into two groups,provided with one of the booklets, then given a test a week later. For the 13 using the standard version, the average exam score was 72.0, with a standard deviation of9.3. For the 13 given the new version, the average score was 80.2, with a standard deviation of 10.1. Assuming normal population with equal standard deviations, and using the 0.05 level of significance, does the new booklet appear to be better than the standard version?
Purchase this Solution
Solution Summary
The solution determines the population variance for maintenance supervisors.
Solution Preview
Hypothesis:
Null hypothesis:
H0:
H0: There is no significant difference in variability between using the standard version and the new ...
Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
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.