T-test statistics questions
Not what you're looking for?
1. The following are the GMAT scores and the GPA's of a random sample of 6 students in a graduate school. During a "cram" weekend the students learned several GMAT applications. With a 0.05 level of significance did the GPAs increase?
BEFORE AFTER
GMAT GPA GPA
610 3.60 3.70
470 3.25 3.30
590 3.50 3.45
520 3.20 3.15
410 3.00 3.10
750 4.00 3.95
2. We can compare two sample means to determine if the samples were obtained from normal populations with the same mean using "t" distribution. Three assumptions are required;
1.
2.
3.
Purchase this Solution
Solution Summary
This solution shows the steps to a t-test statistic problem and discusses assumptions required when comparing two sample means.
Purchase this Solution
Free BrainMass Quizzes
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.
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.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.