Suppose we want to compare the length of hospital stay for patients 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 the hypothesis that lengths of stay are comparable in the two hospitals.

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What additional piece of information do we need to prove that AMLN ~ AOPN ? A ZMNL ZONP B. N is the midpoint of MO ML is parallel to OP No additional information needed.

In a test drive of a new fuel efficient car, a company tracks the car's mpg (miles per gallon) for 2 gallons of gasoline burned during a test drive. Use the approximating method developed in this section with intervals of 0.25 gallons of gasoline and the "left end" approach to complete the items below. Be sure to indicate the endpoints with open and closed "dots". A) based on the specifications given in the instructions above, sketch the approximate mpg rate function on the same axes as the given mpg curve below.