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Question: Suppose that a 95% confidence interval for the proportion of men who experience sleep apnea (irregular breathing during sleep) is .11 to .17 and a 95% confidence interval for the proportion of women who experience sleep apnea is .04 to .08.
a. On the basis of these intervals, is it reasonable to conclude that the population proportions experiencing sleep apnea differ for men and women? Explain.
b. Find a 95% confidence interval for the difference in proportions of men and women in the population who experience sleep apnea.
c. On the basis of the interval you found in part (b), is it reasonable to conclude that the population proportions experiencing sleep apnea differ for men and women? Explain.
Suppose a random sample of 36 is selected from a population with a standard deviation of 12. If the sample mean is 98, the 99% confidence interval?
a. Find the probability that he failed MA or AJ b. If he failed AJ, find the probability that he also failed MA.
1. Why is it important to think carefully about decision situations that involve multiple conflicting objectives? 2. Explain the general decision-analysis approach to dealing with multiple objectives.
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The correlation between Stanford-Binet IQ scores and Wechsler Adult Intelligence Scale (WAIS) IQs is about .80. Both tests have a mean of 100.
the number of traffic accidents on successive days are independent poisson random variable with mean 2.a find the
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If 20% of the students entering college drop out before receiving their diplomas, ?nd the probability that out of 20 students picked at random from the very large number of students entering college, less than 3 drop out.
If the same sample results had been obtained from a random sample of 16 students, could the students' claim be accepted at a lower level of significance?
For a randomly selected sample of 800 U.S. households, use the normal approximation to the binomial distribution in determining the probability that at least 420 of these households have a camcorder.
In a certain binomial distribution, π = 0.20 and n = 30, In using the normal approximation,- What are the mean and standard deviation of the corresponding normal distribution?
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