Question

Nurse             Pretest -Score            Post-test Score

A                                  63                                81

B                                  89                                90

C                                 76                                89

D                                 71                                76       

E                                  90                                90       
F                                  56                                78       
G                                 78                                82

- Conduct a t-test on the data and report your interpretation of the output.

Answer 1

Using Minitab<stat<paired test

Here is the output:

Let the hypothesis are :

Null hypothesis	H₀: μ_difference = 0
Alternative hypothesis	H₁: μ_difference ≠ 0

From the above output, we get that

Test statistic=-2.74

P value=0.03<Level of significance (0.05). Reject the Null hypothesis. There is sufficient evidence that there is a difference between pretest and post-test scores.

Please do the comment for any doubt or clarification. Thank You!