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Problem 2: I am performing a before and after evaluation on 30 students who have taken...

Problem 2:

I am performing a before and after evaluation on 30 students who have taken a keyboarding class. I want to see if the course improved their words per minute keyed.

State the Null and Alternate Hypothesis:

The statistic that I would use is:

What would my t critical be for this calculation at a 0.10 level of significance?

If my t calculated = 1.62, would I reject or fail to reject the null hypothesis?

Math   Statistics-And-Probability   
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please appreciate if the solution is satisfactory

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