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Researchers would like to know whether the proportions of elementary school children who are obese differ in rural and urban areas. They plan to take random samples of 900 children from urban areas and 900 children from rural areas and compare the proportions that are obese. Define Population 1 to be elementary school children in urban areas and Population 2 to be elementary school children in rural areas.
a. Define in words what the parameter p1 represents in this situation.
b. Define in words what p^1 is in this situation.
c. Suppose that, unknown to the researchers, p1 and p2 are both .20 (20%). Describe the sampling distribution of p^1 - p^2, including its mean, standard deviation, and shape.
d. Draw a picture of the sampling distribution that you described in part (c), similar to given Figure.
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Find the mean and the median for each list of values:- 64, 68, 72, 76, 80, 86- 10, 6, 2, 7, 100- 30, 10, 40, 30
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Describe the scale of measurement of Income
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Reliable Furniture is a family business that has been selling to retail customers in the Chicago area for many years. They advertise extensively on radio and TV, emphasizing their low prices and easy credit terms.
Find the probability that the roots are real. - Find the probability that the roots are complex. - Find the probability that the roots are equal.
Determine the coefficient of determination for this regression problem and comment on its capability to predict outcome.
when performing an f-test if the means differ significantly the between-group variance will be much larger than
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Let F be a closed set in R whose complement is the union of disjoint open intervals (an, bn ) from part (a). Let f be a continuous real-valued function on F . Extend f to be linear on [an, bn ], or if an or bn is infinite, extend f to be constant ..
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