ECO220Y1 Midterm: ECO220Y1Y UTSG Term Test 220 2 JAN17 Solution
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ECO220Y1 Full Course Notes
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January 13, 2017, 9:10 11:00 am (1) (a) the mean birth weight in finland is about 3,600 grams with a standard deviation of about 500 grams. We obtain these estimates by noting that the shape of the distribution is normal. Because the normal distribution is symmetric about the mean we find the centre value of the distribution as about 3,600. We use the empirical rule to find the approximate s. d. Weight distribution mu = 6. 96, sigma = 1. 26. 8. 2 obtain p(z < -1. 28) = 0. 10 and p(z < 0. 84) = 0. 80. From the normal table (cid:2873). (cid:2871)(cid:2873)(cid:2879)(cid:3091)(cid:3097) = 1. 28 and (cid:2876). (cid:2868)(cid:2870)(cid:2879)(cid:3091)(cid:3097) =0. 84. Solving two equations for two unknows we obtain (cid:2020)=6. 96 pounds and (cid:2026)=1. 26. Weight in pounds pounds. (2) (a) 0. 15 is a conditional probability: the probability that an advisor has a misconduct record conditional on being at some of the largest financial advisory firms in the u. s. The fact that p(misconduct) = 0. 07 is not equal to.
