The State Bar of California is considering changing its exam structure such that instead of 200 multiple-choice questions, there will be 180. Before making any changes permanent, they first want to collect data to compare the outcomes of the two structures. They have obtained a representative sample of 85 Law students and randomly assigned each to take either the new or old exam. The summarized sample data is given in the table below. Exam N Mean SD New 42 65.9 5.9 Old 43 63.6 3.2 Step 1 Construct a 95% confidence interval to estimate the mean difference in the bar exam scores of the two groups. Use Minitab; you should not need to do any hand calculations. Remember to upload all relevant Minitab output and to identify your answers.
The State Bar of California is considering changing its exam structure such that instead of 200 multiple-choice questions, there will be 180. Before making any changes permanent, they first want to collect data to compare the outcomes of the two structures. They have obtained a representative sample of 85 Law students and randomly assigned each to take either the new or old exam. The summarized sample data is given in the table below.
|
Exam |
N |
Mean |
SD |
|
New |
42 |
65.9 |
5.9 |
|
Old |
43 |
63.6 |
3.2 |
Step 1
Construct a 95% confidence
Remember to upload all relevant Minitab output and to identify your answers.
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