A quarter back completes 22% of us passes. We want to observe this quarterback d

Question

A quarter back completes 22% of us passes. We want to observe this quarterback during one game to see how many pass attempts he makes betore completing one pass. Determine the probability that it takes more than 12 attempts before he completes a pass. a) . 0.0331 b) 0.9888 c 0.9492 d) 0.0111 e) 0.0507 f) None of the above Review Later Question 14 Joe has an 28% probability of passing his statistics quiz 4 each time he takes it what is the probability he will take no more than 6 tries to pass it? a) 0.0390 b) 0.1393 c) 0.0610 d) 0.9609 e) 0.8606 f None of the above

Explanation / Answer

13) p= 0.22

That it takes more than 12 attempts: P(X> 12)= (1-0.22)^12= 0.78^12 = 0.050715

Option: e

14) p= 0.28

If it takes more than 6 attempts: (1- 0.28)^6 = 0.72^6 = 0.139314

That it takes lessthan 6 attempts: 1- P(X>6) = 1- 0.139314= 0.8606

Option e

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