Answer:
a) 0.25
b) 0.75
Step-by-step explanation:
The formula to find probability is
Here as deck pf playing cards has 52 cards.
So total outcomes = 52
a)
A deck of cards has 13 hearts.
Favorable outcomes = 13
Probability of drawing a Heart
b)
A deck of cards has 13 cards of clubs.
So the cards which are not clubs = 52-13=39
Hence favorable outcomes = 39
Probability of not drawing a club card
Answer:
19/48, 7/16, 0.5, 0.75
Step-by-step explanation:
Answer:
2017
Step-by-step explanation:
Molly goes every 2 years
Jerry goes every 3 years
LCM(2,3) = 2 x 3 = 6
2011 + 6 = 2017
The answer is 2017
Answer:
Expected number of hours before the the group exits the building = E[Number of hours] = 3.2 hours
Step-by-step explanation:
Expected value, E(X) is given as
E(X) = Σ xᵢpᵢ
xᵢ = each variable
pᵢ = probability of each variable
Let X represent the number of hours before exiting the building taking each door. Note that D = Door
D | X | P(X)
1 | 3.0 | 0.2
2 | 3.5 | 0.1
3 | 5.0 | 0.2
4 | 2.5 | 0.5
E(X) = (3×0.2) + (3.5×0.1) + (5×0.2) + (2.5×0.5) = 3.2 hours
Hope this Helps!!!
