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Gender differences in dream content are well documented (Winget & Kramer, 1979). Suppose a psychologist studies aggression content in the dreams of men and women. Each subject reports his or her most recent dream. Then each dream is judged by a panel of experts to have low, medium, or high aggression content. The observed frequencies are as follows:
Gender Low Medium High
Female 18 4 2
Male 4 17 15
Is there a relationship between gender and the aggression content of dreams? Conduct a complete Chi-Square Test of Independence as outlined in your Handout.
Do these data present evidence that one form of travel guide is better than the other? Advise Waldenbooks on a possible marketing decision to be made.
What is the critical F value when the sample size for the numerator is four and the sample size for the denominator is seven?
The heights in inches of 18 randomly selected adult males in LA are listed as: 70, 69, 72, 57, 70, 66, 69, 73, 80, 68, 71, 68, 72, 67, 58, 74, 81, 72. Display the data in a stem-and-leaf plot.
Calculate GM's Altman Z-Score. Show your calculations. Based on your calculations, would you agree or disagree with Lutz that GM is over the worst? Explain in detail.
Gather data to see if disabled students' Math SAT scores are significantly lower than those of nondisabled students.
Some critics of big business argue that CEOs are overpaid and that their compensation is not related to the performance of their companies. To test this theory, Chief Executive (Sept. 1999) collected data on executive's total pay and company..
7. Get the passenger car mileage data from http://lib.stat.cmu.edu/DASL/Data?les/carmpgdat.html (a) Fit a multiple linear regression model to predict MPG (miles per gallon) from the other variables. Summarize your analysis.
American food will cause an increase in weights. Use the .01 significance level. A random sample of 11 international students is chosen for the study. What is your conclusion?
Then K/n is the usual unbiased estimator of p. Show that for n = 2 there is a unique unbiased estimator of p2. For what value(s) of K are its values remarkable?
Find the proportion and the count for this sample.- Compute the 95% confidence interval for the proportion.- Convert the estimate and confidence interval in terms of proportions to an estimate and confidence interval in terms of percents.
Complete the F table and make a decision to retain or reject the null hypothesis that the multiple regression equation can be used to significantly predict.
A mean of 1 centimeter and a standard deviation of 0.1 centimeter. A random sample of 12 computer chips is taken. what is the standard error for the sample mean?
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