Bissoy.com
Doctors Medicines MCQs Q&A

In a blindfolded game, a boy can hit the target 8 times out of 12. If he fired 8 shots, find out the probability of more than 4 hits?

In a blindfolded game, a boy can hit the target 8 times out of 12. If he fired 8 shots, find out the probability of more than 4 hits? Correct Answer 0.5938

Here, n = 8, p = 0.6, q = 0.4. Suppose X = number of hits x0 = 0 number of hits, x1 = 1 hit, x2 = 2 hits, and so on. So, (X) = P(x5) + P(x6) + P(x7) + P(x8) = 8C5(0.6)5(0.4)3 + 8C5(0.6)6(0.4)2 + 8C7(0.6)7(0.4)1 + 8C8(0.6)8(0.4)0 = 0.5938.

Related Questions

Dev can hit a target 3 times in 6 shots pawan can hit the target 2 times in 6 shots and Lakhan can hit the target 4 times in 4 shots. What is the probability that at least 2 shots hit the target -
Anil can hit a balloon 6 times in 7 shots. Ben can hit the balloon 4 times in 5 shots, Carey can hit 3 times in 4 shots. What is the probability that the balloon is damaged by exactly 2 shots out of 3 shots?
Aryan and Sameer were playing shooting. If Aryan hits 24 shots and misses 8 shots and Sameer hits 250% more shots than the shots missed by Aryan. Find how much more/less than Aryan in percent does Sameer hit the shots.
P, Q and R shoot to hit a target. If P hits the target 4 times in 5 trials, Q hits it 3 times in 4 trials and R hits it 2 times in 3 trials. What is the probability that the target is hit by at least 2 persons?
Certain numbers of children were playing a game of football. There was a trial taking place on the field. In this trial the probability that a goal is scored is 2/5. The probability that a gril hits a goal is 7/10 whereas the probability than a boy hits a goal is 1/5. What will be the probability that not only a goal is hit but it is also hit by a boy?
Certain number of children were playing a game of football. There was a trial taking place on the field. In this trial the probability that a goal is scored is 2/5. The probability that a girl hits a goal is 7/10 whereas the probability that a boy hits a goal is 1/5. What will be the probability that not only a goal is hit but it is also hit by a boy?
Eight boys are sitting around a circular table and drinking milk in their own separate glasses with ID numbers 1 to 8. Boy-2 is sitting between boy-6 and boy-7, boy-1 is sitting between boy-8 and boy-5. Boy-3 is sitting to the third left of boy-7 and boy-8 is sitting to the third right of boy-4. What is the position of boy-5 with respect to boy-3 ?
An archer can hit the target at a certain percentage of accuracy. If the weather gets windy, his accuracy reduces by 20%. If he can hit the target 196 times out of 350 shots when the weather is windy, what is his strike rate with 250 shots under normal conditions?
A man can hit a target once in 4 shots. If he fires 4 shots in succession , what is the probability that he will hit his target?
Kumar tried his skill at shooting at a fun fair. He has to hit the target and if he hits the target he gets 1 Rs. and if he misses he has to pay 50 paise. He attempted 25 shots and won 10 Rs. In how many did he hit the target?