Unformatted text preview: 50 draws we get less than 1 purple ball? (5) What is the minimum number of draws with replacement required such that the sampling distribution of the sample proportion of purple balls is reasonably approximated as normal? (6) If you sample 50 balls with replacement, which sample proportions are approximately normally distributed? Fill in the table below. Sample proportion Expected value Standard error (se) Approx. normally distributed? Of maroon balls (1’s) Of green balls (2’s) Of purple balls (3’s) Of pink balls (4’s) Of yellow balls (5’s) Of orange balls (7’s) Of blue balls (9’s) (7) [OPTIONAL] How can you think about the result that the Binomial distribution approaches a bell shape as the number of trials goes up as an application of the CLT? 5 5 5 5 5 9 9 9 9 1 1 1 1 1 1 1 1 7 7 7 2 2 2 2 2 2 4 4 3 5...
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 Spring '11
 tanaka
 Normal Distribution

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