T-Test for Dependent Samples
One sample t test
July 9, 2019Hypothesis Testing, Cohen’s d&Factors affecting t statistic
July 9, 2019Big 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?
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B. What is the average difference (D) for the problem?
C. What is the standard deviationfor the matched test?
Null Hypothesis: The new version of XD-3 is not significantly faster …
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