Unformatted text preview: ,p) X = # successes in sample of n Uniform U( a, b ) Normal N(mean, stdev) Two main statistics: X = number of successes in a sample and related to it ... One main statistic: X = sample mean ^ p = propn of successes in sample 1. a. an observational study b. i. Age: quantitative, explanatory, continuous; ii. Internet Use: categorical, response, discrete c. i. Approximately symmetric, unimodal, approximately bellshaped ii. 15 years iii. 28/200 for 14% d. Overall mean = 42 = (?)(170) + (56)(30) ? = (8400 1680)/170 = 39.5 years 200 e. i. 68 12 = 56 years ii. IQR = 65 49 = 16 years iii. Q1 1.5(IQR) = 49 1.5(16) = 25 years iv. Q3 v. 28 2. a. P...
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 Fall '08
 Gunderson
 Normal Distribution, Standard Deviation, 14%, 15 years, 25 years, 16 years

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