Question

A basketball player has 2 free shots. Probability to take a point both times is 0.6, one time 0.2 and not to take a point 0.2.
a) If he has 100 times 2 free shots, find a probability that he’ll take <170 points
b) How many times should he do 2 free shots to take at least 100 points with probability 0.9?

Answer 1

i remember this and i remember having trouble with it. are you supposed to approximate the answer with a normal distribution? because i really don't know.
the expected number of points in 200 shots (100 time for two free throws) is 200*.6+200*.2=160

Answer 2

maybe you can tell me what method you think you are supposed to use and we can work it out

Answer 3

I think it couldn't be 200*0.6 because 0.6 is probability for 2 shots.
I don't have any idea with this problem. If I find some solution, I'll write it here :)

Answer 4

i mean if you get 100 attempts at 2 shots then 60% of the time you make both, for 120 points, and 20% of time you get one of the two for another 40 points, so you expect to get 160 points in 200 throws (100 times at 2 throws a time)

Answer 5

my guess is you are supposed to approximate this by the normal distribution, but i could be way off. i was just wondering if this is from a section in a book, and what the section is on

Answer 6

no, it's not from the book, it was on the exam :/ I have one problem with corelation coefficient and one with conegrevnce. Are u good in it?

Answer 7

hello estudier
any ideas?

Answer 8

no idea :D

Answer 9

Each shot,he takes a point or not, can u do it that way?

Answer 10

doesn't it take a lot of work?