| 3/17/18 10:17 PM MATH 331.W01 SPRING2018 (1) Homework: Hw # 3 Score: 0 of 1 pt

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| 3/17/18 10:17 PM MATH 331.W01 SPRING2018 (1) Homework: Hw # 3 Score: 0 of 1 pt 5.R.85 Oluwaseun onaolapo Save 11 of 22 (13 complete) HW Score: 53.03%, I 1.67 of 22 pts Question Help (a) Suppose that you throw 3 dice. Find the probability that you get at least one 6. (b) Suppose that you throw 2 dice 22 times. Find the probability that you get at least three (5,5)s, that is, hard ten." (a) The probability of getting at least one 6 is Round to four decimal places as needed.) 1 Enter your answer in the answer box and then click Check Answer. part Clear Al Check Answer

Explanation / Answer

a)

P(atleast one 6) =1-P(none)

                              =1 - (5*5*5)/(6*6*6)

                              =1- 125/216

                              =91/216

                              =0.4213

b)

We use binomial distribution formula

n=22

p=1/36

q=1-p =1 - 1/36 =35/36

P=nCr p^r q^(n-r)

So, P(x>= 3) = 0.0222   ( using technology)

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