a. .9649 , b..6774 , c. .9913 , d. .3812
2006-11-17 12:07:17 · 4 answers · asked by Cf Precious 3 in Education & Reference ➔ Homework Help
C.
This is a binomial probability problem.
The binomial formula says
P(r out of n) = (nCr)(p^r)(q^(n-r)), where n is the number of trials (here 6 rolls), r is the number of successes (here 0, 1, 2, and 3 twos), p is the probability of success (here 1/6), and q is the probability of failure (here 5/6)
You need to plug in 0, 1, 2, and 3 for "r" into this formula. If you do, you get:
P(0 twos) = .3348979767
P(1 two) = .401877572
P(2 twos) = .200938786
P(4 twos) = .05358367627
You add up these answers to get your final answer, about .9913
2006-11-17 12:33:09 · answer #1 · answered by dmb 5 · 0⤊ 0⤋
3/6..1/2
2006-11-17 20:25:49 · answer #2 · answered by blitzyflitzy294 3 · 0⤊ 1⤋
b
2006-11-17 20:29:46 · answer #3 · answered by Double A 3 · 0⤊ 0⤋
do you know how to do this?
2006-11-17 20:35:32 · answer #4 · answered by *gasp* it's me! 3 · 0⤊ 0⤋