Problem #7 (12 points) Two methods of sales have been used and the results they

Question

Problem #7 (12 points) Two methods of sales have been used and the results they produced are illutrated by the table below Sales 270 416 No Sale Aggressive Method 310 164 Passive Method Define the events and compute the following probabilities A- aggressive method N-no sales Pa passive method S-sales c) P (N/A), a) P(S), b) P(S/Pa), d) P(A or S) e)P(Pa and N) Problem #8 A survey indicates that 40% of households in the USA own CD players From a random sample of 12 households in the USA find the probability that the number of households who own CD players is: a) at least 8 ?) at most 5 b) between 4and 7,

Explanation / Answer

a) P(S) = (270+416)/(270+416+310+164) = 0.5914

b) P(S/pa) = 416/(416+164) = 0.7172

c) P(N/A) = 310/(270+310) = 0.5345

d) P(A 8r S) = (270+310+416)/(270+310+416+164) = 0.8586

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