A survey of 144 similar-sized hospitals revealed a mean daily census in the pediatrics service of 27 with a standard deviation 6.5. Assume that this sample represents the entire population of the study. The researcher wishes to know whether or not the population mean is greater than 25 at the 0.05 level of significance. a. What is the most appropriate statistical test for this question? (t test or z test) (5%) b. What is the statistical testing value? (5%) b. What is the statistical decision? (5%)

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geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584