Two different teaching methods are being evaluated After 12 students were taught using Method 1 and 13 students were taught using Method 2, all the students were given the same exam with the results for the number of correct answers summarized below Method 1 Method 2 Sample size 12 13 Sample variance 841 00 1,474 56 1 Calculate S 2 p 2 What are the degrees of freedom and what is the table value that you would use for a 90 confidence interval 3 Suppose you calculated a 90 confidence form 1 m 2 and it resulted in an interval of ( 5 471, 0 55) What would be the interpretation 4 Suppose you were asked for the p value How would you go about answering that question

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Question: Two different teaching methods are being evaluated.After 12 students were taught using Method 1 and 13 students were taught using Method 2, all the students

Two different teaching methods are being evaluated.After 12 students were taught using Method 1 and 13 students were taught using Method 2, all the students were given the same exam with the results for the number of correct answers summarized below:

Method 1 Method 2

Sample size 12 13

Sample variance 841.00 1,474.56

1. Calculate S²_p

2. What are the degrees of freedom and what is the table value that you would use for a 90% confidence interval?

3. Suppose you calculated a 90% confidence form₁-m₂ and it resulted in an interval of (-5.471, -0.55). What would be the interpretation?

4. Suppose you were asked for the p-value. How would you go about answering that question?

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