STAT 205 Quiz: STAT 205 South Carolina Quiz4 key
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Stat 205 quiz 4: in the united states, 42% of the population has type a blood. Consider taking a sample of size n = 4. Answer: you can compute this directly with your ti-84 using binomcdf(4,0. 42,2) obtaining 0. 800. P (y 2) = p (y = 0) + p (y = 1) + p (y = 2) = 0. 795 (b) (2 points) what is p (y = 0), the probability that none of the four sampled have type. Otherwise you can use a table and compute. P (y > 200) = 1 p (y < 200) 30 (b) (2 points) what is the 78. 8th percentile of cholesterol levels, i. e. the number k such that p (y < k) = 0. 788? (hint: what is p (y < 200) from part (a)?)
