Question

1.  Suppose we take a sample from two separate populations and record some quantitative measurement for both.  The first sample contained 60 respondents and resulted sample mean of 103 with a sample standard deviation of 8.2.  The second sample contained 75 respondents and resulted sample mean of 100 with a sample standard deviation of 7.56.  Using this information, our goal is to test:

H₀:  = 0

H_a:  > 0

What is the test statistic, , for this example?  Note: for your test statistic, keep the order of (sample #1) minus (sample #2).

1. 0.549
2. 1.980
3. 2.377
4. 3.165
5. 4.552

2. Using the information from the previous problem, which tail will you look at to find your p-value?

1. Left tail
2. Both tails
3. Right tail

3. Refer to the information in the previous two questions. Using the df and t-distribution calculator Excel spreadsheet, how many degrees of freedom will this test use?

1. 78.445
2. 98.342
3. 99.987
4. 111.926
5. 121.666

4. Using the information from the previous three questions, what is the p-value for this hypothesis test?

1. 0.00037
2. 0.00066
3. 0.00098
4. 0.00174

Answer 1

2) Right tailed

3) 121.666

For t stat and p value options are not same

( I used ti84 plus calculator )

( Values may varry calculator to calculator )