1) The following represents data of children IQ scores on the Stanford revision

Question

1) The following represents data of children IQ scores on the Stanford revision of the Binet-Simon intelligence scale: 6 25679 0000124555668 0000112333446666778889 9 10 0001122222333566677778899999 00001122333344444477899 12 006 26 2 0 13 14 15 16 a) Are there any outliers? (outside 2s) b) Are there any rare outliers? (outside 3s) 2) If the probability of finding a quarter on any given day is 5.5%, and the probability of finding a dollar on any given day is 2.5%, what is the probability that you find at least one on any given day? [This is considered one eve should have only one answer.] nt, so you

Explanation / Answer

2:

Finding a quarter on a given day and finding a dollar on a given are independent events so the probability of finding a dollar and finding a quarter is

P(dollar and quarter) = P(dollar)P(quarter) = 0.025 * 0.055 = 0.001375

So the probability of finding at least oneon any given day is

P(dollar or quarter) = P(dollar) + P(quarter) - P(dollar and quarter) = 0.025 +0.055 - 0.001375 = 0.078625

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