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b) at least 1 ace. c) exactly 2 aces.

2006-12-28 17:57:17 · 7 answers · asked by Lindsay 1 in Science & Mathematics Mathematics

7 answers

We can use binomial distribution because we only have two cases for each dice:1) (1/6) of chance to get ace; 2) (5/6) of chances to get no ace.

[(1/6) + (5/6)]^6

a) C(6,1)(1/6)(5/6)^5 = 0.40188

b) 1 - C(6,6)(5/6)^6 = 0.66510

c) C(6,2)(1/6)^2(5/6)^4 = 0.20094

2006-12-28 18:52:02 · answer #1 · answered by sahsjing 7 · 0 0

You have 6 dice with 6 sides each, so the total number of possible rolls is 6 to the 6th power. There are 6 possible ways to get only one ace, so the probability is 6/6^6, or 1/6^5.

2006-12-28 18:07:59 · answer #2 · answered by mamills47 2 · 0 1

a)
P(exactly1 Ace) = 6(1/6)(5/6)^5 = 0.4

b)
P(at least 1 Ace) = (1 - (5/6)^6) = 0.665

c)
P(exactly 2 Aces) = 2*4(1/6)^2(5/6)^4 = 0.107

2006-12-28 18:19:36 · answer #3 · answered by Helmut 7 · 0 0

"0" as u don't have aces in True Dice..if u define any one of the sequence of the sides as the ace then its
a) 1/6
b) 1/6
c) 1/3

2006-12-28 18:18:25 · answer #4 · answered by Alex 2 · 0 0

a) 6 * (1/6)(5/6)^6 = (5/6)^6 <- Helmut and sahsjing agree

b) 1 - (5/6)^6 <- Helmut and sahsjing agree

c) (6 * 5 / 2) * (1/6)^2(5/6)^4 <- sahsjing agrees

2006-12-28 18:04:06 · answer #5 · answered by ? 6 · 0 1

I think it sounds like the game YAHTZEE..... not sure about the "probability" part though... no... wait, yahtzee only has 5 die... sorry....

2006-12-28 18:02:55 · answer #6 · answered by ravenhm 2 · 0 0

what is an ace in this context |?

2006-12-28 17:59:32 · answer #7 · answered by gjmb1960 7 · 0 0

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