T-Test for Dependent Samples
Not what you're looking for?
Big Time Software Co. has developed a new version of it XD-3 software. They want to determine if the new version of XD-3 is faster then the old version. In a matched sample test they obtained the following results.
Tester Old Version New Version
1 2.6 2.8
2 4.0 5.3
3 3.8 2.9
4 1.8 1.1
A. What is the Null and Alternate hypothesis statement for the matched test?
-
B. What is the average difference (D) for the problem?
C. What is the standard deviation for the matched test?
Purchase this Solution
Solution Summary
This solution is comprised of detailed step-by-step calculations and analysis of the given problems related to Statistics and provides students with a clear perspective of the underlying concepts. The expert provides the solution in an Excel file.
Solution Preview
Null Hypothesis: The new version of XD-3 is not significantly faster ...
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.