Unformatted text preview: 261 90 1 30 29 30 1 30 29 30 1 3 30 1 n n n 3 . 90 29 30 29 30 1 30 29 30 1 3 30 1 n n n We only needed to check lower endpoint because this distribution is positively skewed. Even with a sample size of only 1, we would have no trouble with the upper endpoint. Hence we need a sample size of at least 261. (6) Sample proportion Expected value Standard error (se) Approx. normally distributed? of maroon balls (1’s) 0.267 0.063 Yes of green balls (2’s) 0.167 0.053 Yes of purple balls (3’s) 0.033 0.025 No of pink balls (4’s) 0.067 0.035 No of yellow balls (5’s) 0.200 0.057 Yes of orange balls (7’s) 0.100 0.042 No of blue balls (9’s) 0.133 0.048 No...
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This note was uploaded on 03/01/2011 for the course ECON 220 taught by Professor Tanaka during the Spring '11 term at University of Toronto.
 Spring '11
 tanaka

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