Question

You want to esteem the average difference between grades on a certain math exam before students take the associated math class and after they take the math class. You take a random sample of 5 students and get the following results.

Grade Before	Grade After
54	82
25	76
73	98
23	43
42	38

A) Determine the population(s) and parameter(s) being discussed.

B) Determine which tool will help us find what we need (one sample z test, one sample t test, two sample t test, one sample z interval, one sample t interval, two sample t interval).

C) Check if the conditions for this tool hold.

D) Whether or not the conditions hold, use the tool you choose in part B. Use C=95% for all confidence intervals and alpha=5% for all significance tests.

* Be sure that all methods end with a sentence describing the results *

Answer 1