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In a sample of 335 people aged 65 and over 123 of them had sleeping disorder. What is the lower bound for the 90% confidence interval for the proportion of those aged 65 and over who had sleep disorder.
A two-tailed probability is .03. What is the one-tailed probability if the effect were in the specified direction? What would it be if the effect were in the other direction?
Mr. Bacon has been wondering if he could predict the first year's box office revenue if he knew several things about a film:
A committe studying employer-employee relations proposed that a rating system be adopted. Each employee would rate his or her inmediate supervisor and in turn the supervisor would rate each employee.
Are the residuals from such a regression independent? Is there a difference in model fit and independence of residuals when using infant death rate as a response variable?
1. What is the probability that the duration of the pregnancy of a randomly chosen pregnant woman will last less than 260 days?
a researcher has reason to believe that for an experiment with 50 points a 95 prediction interval would be of width 8.
Show that given sequence does not converge in any other sense and therefore convergence in distribution does not imply convergence in any other form.
a.) Formulate an LP model for this problem with the objective of maximizing total profit b.) Implement your model in a spreadsheet and solve it. c.) What is the optimal solution?
If a technical assistant is randomly selected, what is the probability that she would like to have MAC, given that she would like to have a PC as well?
What about drawing a random sample only from cell phone exchanges? Discuss the advantages and disadvantages of such a sampling method compared with surveying randomly generated telephone numbers from non - cell phone exchanges.
Calculate the sample correlation coefficient between billed consulting hours and total project costs.
to compare the effects on energy intake of drinking wine either before or with a meal 11 men participated in a
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