According to the Alzheimer’s Association1, as of 2011 Alzheimer’s disease affects 1 in 8 Americans over the age of 65. A study is planned of health problems faced by the elderly. For a random sample of Americans over the age of 65, report the shape, mean, and standard deviation of the sampling distribution of the proportion who suffer from Alzheimer’s disease, if the sample size is
Answer to relevant QuestionsIn college basketball, a shot made from beyond a designated arc radiating about 20 feet from the basket is worth three points, instead of the usual two points given for shots made inside that arc. Over his career, University ...The 2006 AAPA survey of the population of physicians’ assistants who were working full time reported a mean annual income of $84,396 and standard deviation of $21,975. (Source: Data from 2006 AAPA survey ...You’d like to estimate the proportion of all students in your school who are fluent in more than one language. You poll a random sample of 50 students and get a sample proportion of 0.12. Explain why the standard deviation ...Refer to the previous exercise. a. In part b, if the sampling distribution of the sample proportion had mean 0.409 and the standard deviation 0.008, give an interval of values within which the sample proportion will almost ...An interval estimate for a mean is more informative than a point estimate, because with an interval estimate you can figure out the point estimate, but with the point estimate alone you have no idea how wide the interval ...
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