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Mathematics 7 Online
OpenStudy (anonymous):

Please Help! So Confused! Medal and fan will be given! Question Below VVV

OpenStudy (anonymous):

A basketball player makes 80% of her free throws. Recently during a very close game, she shot 5 free throws near the end of the game and missed 3 of them. The fans booed. What is the probability of her missing 3 (or more) free throws out of 5? Set up and conduct a simulation (using the random digits below) with 10 repetitions. 83234602784360127630126087268768056651093246461081275417450 17491243217468017649817480716408712807408783402746237416207 48648148631085738560871267162622568746587387234879847296948 179846198459812659816512460043380430440

OpenStudy (tkhunny):

P(3 or more missed) = p(making 0 or 1) Pick a starting point, somehow.

OpenStudy (tkhunny):

Did you pick a starting point?

OpenStudy (anonymous):

@tkhunny Actually I was just about to say... I know nothing about this problem. Could you please give me a better explanation? I have never done this problem before.

OpenStudy (tkhunny):

Pick a starting point. You have a list of numbers. You must start somewhere. Where shall you do that?

OpenStudy (anonymous):

Oh okay.. so I can just pick any random number from the list? If so... I pick the first one. 8. @tkhunny

OpenStudy (anonymous):

@mathmate please help!

OpenStudy (mathmate):

What @tkhunny was trying to help you do is to start the simulation experiment. Each digit represents a throw. You have to decide which digits stand for success (8 out of 10) and which ones stand for her misses (2 out of 10). So from (any) 5 numbers you pick, you will compile the results (2 in 3 out, etc.). This is called one trial. Repeat the trial 10 times, and report how many out of your 10 trials that she missed 3 out of 5. Then calculate the (experimental) probability that she misses 3 out of 5.

OpenStudy (anonymous):

So would this be okay? When I get the numbers that are from 0 - 7 it is a hit and if I get a 8 or a 9 it is a miss?

OpenStudy (anonymous):

or no 1 -7 is a hit and 0, 8 , 9 is a miss?

OpenStudy (anonymous):

@mathmate

OpenStudy (mathmate):

The first one is ok, with 80% hit and 20% miss. The second would have 30% miss.

OpenStudy (anonymous):

So is this right: 83234 mhhhh ----- 60278 hmhhm ----- 43601 hhhmh ----- 27630 hhhhm ----- 12608 hhhmm ----- 72687 hhhmh ----- 68056 hmmhh ----- 65109 hhhmh ----- 32464 hhhhh ----- 61081 hhmmh

OpenStudy (mathmate):

So according to your results, what is the probability that she misses 3 out of 5?

OpenStudy (anonymous):

So in all of the repitions there is no instance where there were 3 or more hits out of 5... so is the answer: The probability of her missing 3 (or more) free throws out of 5 is 0% ... is that right? @mathmate

OpenStudy (mathmate):

Yes, except that I would like you to specify that it is an "experimental probability" with 10 trials using random numbers starting from which series and where.

OpenStudy (anonymous):

Wait so am I supposed to use random numbers and not go in order? @Michele_Laino

OpenStudy (anonymous):

@Mehek14 Can does math mate mean that I have to not use the numbers in order?

OpenStudy (mathmate):

It's perfectly ok to use the random numbers in order. IF you don't, you have to specify a systematic way to show that you did not "choose" the numbers.

OpenStudy (anonymous):

Thank you so much! @mathmate

OpenStudy (mathmate):

You're welcome! :)

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