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You are interested in whether men participate more than women in political activities, so you survey 632 men and 675 women and ask them how many political events they attended within the past year. Here are your results:
MEN WOMEN
mean = 1.58 mean = 1.42
s.d. = 0.10 s.d. = 0.23
N=432 N=375
With 95% confidence what do you conclude?
Predictors YearHire (year when the individual was hired), Race (1 if individual is black, 0 otherwise), and Rank (1 if individual is an assistant professor, 0 otherwise). Interpret these results.
Seniors as to how much they spent on textbooks in that term. The bookstore believes that the two groups spend the same amount. What is the test value?
The federal government recently granted funds for a special program designed to reduce crime in high-crime areas. A study of the results of the program in eight high-crime areas of Miami, Florida, yielded the following results.
Inspection of student data generated during pre/post treatment surveys shows that among 10 subjects, 7 had higher scores after an experimental treatment
A sample of 23 European countries found that variance of life expectancy was 7.3 years. Determine the 95% confidence interval estimate for variance of life expectancy in Europe?
Do the thinner cans appear to be strong enough so that they are not crushed when the top lids are pressed onto the sides?
She knows that each order for these bills costs $300 for clerical and armored car delivery costs, and that order lead time is six days. Assuming a thirty-day month, if she were to order 6,000 bills at a time, what would be the length of an order cy..
For a given confidence interval, what is the interpretation of a 96% confidence level?
Is there an alternative test to the chi squared test? What if my results give an expected frequency below 5, which stats book states that these should be treated with caution?
Different approaches for creating systems simulation models include?
Based on this information, complete the following statements about the distribution of the scores on the writing section for the recent year.
The 587th of the 731 trees in the preserve was selected as the first observation in the sample. What is the tree number of the second observation in the sample?
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