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- A trapezoid has bases with lengths x + 3 and 3x — 1 and a median oflength 1 1 . Find the value of x.Suppose we want to compare the length of hospital stay forpatients with the same diagnosis at two different hospitals.The results are shown in images. a) Why might a t test not be very useful in this case?b) Carry out a nonparametric procedure for testing thehypothesis that lengths of stay are comparable in the twohospitals.Refer to isosceles trapezoid EFGH with median IJ with solution.
- For a χ2-curve with 22 degrees of freedom, find the χ2-value that has area a. 0.01 to its right. b. 0.995 to its right.If L2 is the sum of the approximating rectangles for the area under the curve y=|cosx| from 8π to 10π where the sample points are left endpoints, then L2/π = ?Use the Midpoint Rule with the given value of n to approximate the integral. 5 S 4x4e-xdx, n=4 1