T-test for dependent samples

Reference no: EM13107159

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?

Reference no: EM13107159

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