72% of men consider themselves professional baseball fans. You randomly select 10 men and ask each if he considers himself a professional baseball fan. Find the probability that the number who consider themselves baseball fans is (a) exactly eight, (b) at least eight, and (c) less than eight. If convenient, use technology to find the probabilities.
I need help figuring out how to calculate (sub)n C_x specifically. My instructor was not able to help me...and the text has been worthless in describing how to calculate this.
The correct answer for (a) is 0.255, (b) .254794, and (c) 0.037439.
The probability that at least 8 consider themselves fans = 0.254794 + 0.145596 - 0.0347439 = 0.438
Let X denote the number who consider themselves baseball fans, then X follows binomial distribution with... View the full answer
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Answer: (a) T he probability that exactly 8 men consider themselves professional fans is... View the full answer