Mathematics, 04.07.2020 22:01 kolibeilfuss
For each of the following scenarios, discuss (in at most five sentences) the main issue(s) with respect to sampling or reporting bias.
a) A particular city has 14 architects who own their own firm. To select a survey sample, each architect was contacted via telephone by order of appearance in the telephone directory, then the first 8 that agreed to be interviewed formed the sample.
b) The September 1992 issue of Prevention magazine included a women’s health survey; approx- imately 16,500 women responded to the survey. The May 1993 issue reported on the survey results, claiming that "92% of our readers rated their health as excellent, very good, or good".
c) Many scholars and policymakers are interested in estimating the prevalence of mental illness among the homeless population. In one study, the authors sampled homeless persons who received medical attention from a clinic that was part of the Health Care for the Homeless project, resulting in an estimated prevalence of 33%.1 The authors maintain that selection bias is not a serious problem because the clinics are easily accessible to homeless people.
Answers: 2
Mathematics, 21.06.2019 15:00
Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above
Answers: 3
Mathematics, 21.06.2019 17:00
Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.
Answers: 1
Mathematics, 22.06.2019 00:00
The function y= x - 4x+ 5 approximates the height, y, of a bird, and its horizontal distance, x, as it flies from one fence post to another. all distances are in feet. complete the square to find and interpret the extreme value (vertex). select two answers: one extreme value and one interpretation.
Answers: 2
For each of the following scenarios, discuss (in at most five sentences) the main issue(s) with resp...
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