Answer (Choose 1 answer)
A salesperson knows that 20% of her presentations result in sales. Use the normal approximation formula for the Binomial distribution to find the probabilities that in the next 60 presentations at least 9 result in sales.Let P(Z < -1.13) = 0.1268 and P(Z -0.81) = 0.2089.
A. 0.8732
B. 0.7911
C. 0.1241
D. 0.6421
E. None of the other choices is correct
Exit 19
