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Eating disorder study. Data from a psychology experiment were reported and analyzed in American Statistician (May 2001). Two samples of female students participated in the experiment. One sample consisted of 11 students known to suffer from the eating disorder bulimia; the other sample consisted of 14 students with normal eating habits. Each student completed a questionnaire from which a ‘‘fear of negative evaluation'' (FNE) score was produced. (The higher the score, the greater the fear of negative evaluation.) The data are displayed in the table at the bottom of the page.
(a) Construct a stem-and-leaf display for the FNE scores of all 25 female students.
(b) Highlight the bulimic students on the graph, part a. Does it appear that bulimics tend to have a greater fear of negative evaluation? Explain.
(c) Why is it important to attach a measure of reliability to the inference made in part b?
Can Mr. Rutter conclude that the mean weight of the bags is less than 50 pounds? Use the 0.1 significance level. In a brief report, tell why Mr. Rutter can use the z distribution as the test statistic.
supposed 57 of the registered voters in a country are republican.if a sample of 722 voters is selected what is the
Assume that 20 students registered for the course. Compute the probability that more than three will withdraw (to 4 decimals).
A man buys a car for £4500 and pays a deposit of 20 per cent. Interest is charged 2.5 per cent on the outstanding balance. He repays this balance over 24 months. How much is the monthly instalment (to the nearest penny)?
If a recent news report indicated that out of 105 people polled, 65 men and 15 women had given the president a high approval rating, while 15 men and 10 women had given the president a low approval rating. A chi-square test yields these resul..
a taiwanese fast food chain wants to introduce its franchises into the western united states 28 different states .
Compare the results to those in Figures. Does it seem reasonable that the information given in Table could be a sample from the population depicted in these figures?
What is the best point estimate of the population mean and what is a reasonable range of values for the population mean, i.e. upper and lower end of the confidence interval?
Rhode Island Red Chickens the incubation time for Rhode Island Red chicks is normally distributed to find out the number of chicks we expect that will hatch.
A researcher is interested in whether social assertiveness might be influenced by training procedures. Two groups of college sophomores are randomly selected. Group A subjects are assigned to the "training sessions" and Group B subjects do not rec..
a recent news report indicated that out of 105 people polled 65 men and 15 women had given the president a high
The entire batch will be rejected if at least one of those tested is defective. What is the probability that the entire batch wili be rejected?
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