Question 402468: 5. Using the example from question #4, write the decision rule using a 95% level of confidence
here is Question #4
4. There are two groups of students taking a statistics class. Group A is taking the class with the same professor as their previous class. Group B is taking the class with a new professor. As a researcher, the school has challenged you to determine if Group B will have a higher percentage of students drop than Group A. What statistical test will you use to determine this?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 5. Using the example from question #4, write the decision rule using a 95% level of confidence
Here is Question #4
4. There are two groups of students taking a statistics class. Group A is taking the class with the same professor as their previous class. Group B is taking the class with a new professor. As a researcher, the school has challenged you to determine if Group B will have a higher percentage of students drop than Group A. What statistical test will you use to determine this?
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Your Problem #4 calls for a right-tail z-test with an undetermined alpha.
The stated question could be answered at any level of significance
using a 2-proportion Ztest. with alternate hypothesis pb-ba > 0
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Now you are asked for the decision rule for a 95% CI.
A 95% CI mimics a two tail test with alpha = 5%.
The decision rule for such a test is "Reject Ho if z <-1.96
or if z > +1.96.
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I'm not sure that's what you want; you'll have to decide.
Cheers,
Stan H.
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