# Using the following data about the effectiveness of a training course, at the 5%

Anonymous
timer Asked: Dec 23rd, 2014

Question description

Using the following data about the effectiveness of a training course, at the 5% significance level what are the: 1) t-statistic, 2) t-critical, and 3) conclusion?

Data :
Student   Pre-Test   Post-Test
1              78            82
2              65            76
3              82            81
4              73            74
5              89            92
6              77            80
7              61            72
8              72            75
9              80            85

 A 1) 3.255, 2) 1.833, 3) We can say with 95% confidence that the posttest scores were higher than the pretest scores B 1) 3.255, 2) 2.262, 3) We can say with 95% confidence that the posttest scores were higher than the pretest scores C 1) 3.255, 2) 1.860, 3) We can say with 95% confidence that the posttest scores were higher than the pretest scores D 1) 9.766, 2) 2.262, 3) At the 95% confidence level, there is no statistical significance between the pretest and the posttest scores

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