worth a total of 216 points. ame: _ei s Zosud CRN: 1) The adult population in th

Question

worth a total of 216 points. ame: _ei s Zosud CRN: 1) The adult population in the U.S. is classified as being only right or left handed. Eighty percent (80%) of the adult U.S. population is classified as being right handed. A random sample, with replacement, of 5 adults from the U.S. population is obtained. What is the probability of obtaining in the sample... a) Exactly 2 right-handed adults? Answer: What is the standard deviation of the probability distribution of right-handed adults as describ by the parameters of the distribution in the above problem (1)? b) Answer:

Explanation / Answer

P = 0.8

n = 5

A) P(X = 2) = 5C2 * (0.8)^2 * (0.2)^3 = 0.0512

B) standard deviation = sqrt (n * P * (1 - P))

= sqrt (5 * 0.8 * 0.2)

= 0.894

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