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A prediction and analysis:
Suppose you now wanted to determine whether there was a significant difference between the means for the women versus the men. would you expect there to be a significant difference between the means? Why or why not?
Given:
The mean ADDSC score for male (54.291) and female students (49.788) is considerably close to one other.
The power of the test to be 0.3863
Using the appropriate statistical procedure on the SPSS, test the between group means for a significant difference.
Report the SPSS results and your conclusion.
How large a sample should be taken if the desired margin of error is?
To select a _________ sample, an intact group of subjects that represent the population is selected.
Would the null hypothesis be accepted or rejected in this case?
Which is the probability that the median of the sample is between $17 and $20?
Concept of statistical signi cance
A study sponsored by American Express Co. and the French government tourist office found that old American stereotypes about French unfriendliness weren't true.
Find a 90% confidence interval for the difference between the proportion of men and the proportion of women who approved of Reagan's performance. What assumption do you make to use this method?
Compute the probability that debt for a randomly selected borrower with good credit is more than $18,000?
Which of the following would be most helpful in assessing the practical significance of a test of hypotheses about a proportion?
A researcher measures a response variable Y and explanatory variable X on each of several objects. A scatterplot of the measurements is as follows.
Determine odds student gets more than 14 questions correct? Determine the odds student gets exactly 12 questions correct?
What are the possible combinations of coins that Sanjay could have received in change?
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