A pair of dice are rolled. Let A be the event as “the first dice
roll is 3” and event B as “the second dice roll is 4”. Let event C
be as “the sum of the dice rolls are 7.”
a) Show that A and B are independent, that A and C are
independent, and that B and C are independent.
b) Show that A, B, and C are not mutually independent.
A pair of fair dice are rolled once. Suppose that you lose $7 if
the dice sum to 3 and win $12 if the dice sum to 4 or 12. How much
should you win or lose if any other sum turns up in order for the
game to be fair.
I got a negative answer and im not sure thats correct.
Two fair dice are rolled:
a) What is the probability of an even number or a 3 on the first
die? Are these two events mutually exclusive and why?
b) What is the probability of an even number on the first die
and a 5 on the second? Is conditional probability involved in this
case? Why or why not?
Roll two dice simultaneously once. Let A be the event that the
sum of the two dice is 8 and B be the event that at least one of
the dice is odd.
a) Find P(A) and P(B). Express your answer as a
FRACTION.
b) Find P(A given B) and P(B given A). Express your
answer as FRACTIONS. Are A and B independent? Explain.
c) Find P(A and B). Express your answer as a
FRACTION.
d) Find P(A or B)....
Dice Suppose that a red die and a green die are rolled and the
numbers on the sides that face upward are observed. (See Example 7
of this section and Example 2 of the first section.) (a) What is
the probability that the numbers add up to 9? (b) What is the
probability that the sum of the numbers is less than S?
a. Two dice are rolled; find the probability that the sum of the
two numbers is 7.
b. If one card is drawn from a standard deck, find the
probability of getting a spade card or a Queen.
c. A couple has 3 children, find the probability that exactly
one are girls.
You roll two six-sided even dice. What is the probability that
you get a score of at least 11?
a. 2/11
b. 1/12
c. 1/18
d. 1/6
You toss a fair coin 3 times in a row. What is the probability
of getting at most two heads?
a. 3/4
b. 1/4
c. 3/8
d. 7/8