A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years ago. A sample of final examination scores from students enrolled today and from students enrolled five years ago was taken. You are given the following information. X 0² n Today 82 112.5 45 Five Years Ago 88 54 36 What is the conclusion that can be reached about the difference in the average final examination scores betwee the two classes? (Use a .05 level of significance.) O a. The students who enrolled in statistics today are the same students who enrolled five years ago. Ob. There is a statistically significant difference in the average final examination scores between the two classes. Oc. It is impossible to make a decision on the basis of the information given. Od. There is no statistically significant difference in the average final examination scores between the two classes.

Q: WOW THANKS! Can you help with question 18 too? I realized I already answered 20 after i sent it

A: Here is the solution:

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