Question
Four individuals with high levels of cholesterol went on a special crash diet, avoiding high-cholesterol foods and taking special supplements. Their total cholesterol levels before and after the diet were as follows: Participant Before After J. K. 287 255 L. M. M 305 269 A. K. 243 245 R. O. S. 309 247 Using the .05 level of significance, was there a significant change in cholesterol level?
(a) Use the steps of hypothesis testing.
(b) Sketch the distributions involved.
(c) Explain your answer to someone who has never taken a course in statistics.
Question
Using calculus, find the equation of the line through the point (3, 5) that cuts off the least area from the first quadrant. Show all steps and define variables when appropriate. Use exact numbers when possible; if necessary, round any decimal numbers to four digits behind the decimal.
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