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You are interested in the familial aggregation of cholesterol levels. Suppose cholesterol levels are assessed in 100 children, 2 to 14 years of age, of men who have died of heart disease and it is found that the mean cholesterol level in the group is 207.3 mg/dL with a standard deviation of 35.6 mg/dL. Data from 74 controls were also collected for children in the same age range with fathers that are alive and do not have heart disease, and the results for this sample were a mean cholesterol level of 193.4 mg/dL with a standard deviation of 17.3 mg/dL. You know that both populations from which the samples were taken are normally distributed, and while you do not know the population variances you believe that they are unequal in the two populations. Can you conclude that the cholesterol levels in the two groups differ? Assume α = 0.05.
a. give at least two important uses of the moment generating function mgf of an rv.b. could mt 12 e-2t 25 e-t - 25 be
You are in charge of numbering the homes in a new subdivision. If we were to ue 0 through 9 as our number to use and we want to have
The number of passengers on the Carnival Sensation during one-week cruises in the Caribbean follows the normal distribution.
In which study could the experimenter effect be more of a problem: a study in which the response of interest is cholesterol levels
Estimate the level of support throughout the community, based on a 95% confidence interval.
Create a graph with the trendline displayed for each of the three different regressions. What are the least squares regression line equations for each of the three different regressions?
How many sequences of 3 things can be formed from 9 thins with replacement and order is important
Suppose that in a certain population, individuals' heights are approximately normally distributed with parameters µ = 70 and s = 3 in.
Antidepressants and bone fractures. For a period of five years, physicians at McGill University Health Center followed more than 5000 adults over the age of 50.
Consider rolling two fair six-sided dice. Let W be the product of the numbers showing. What is the probability function of W?
based on available information lead time demand for cd-rom drives averages 250 units normally distributed with a
Marketing and Consumer Behavior Most walkbehind lawn mowers have three options for disposal of grass clippings: by bagging, by mulching, or by side discharge.
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