Answer
the following questions dealing with conditional probability.
1. 
You roll two dice. The first die
shows a ONE and the
other die rolls under the table and you cannot see it. Now,
what
is the probability that both die show ONE? 
Choose:





2. 
You decide to tell your fortune by drawing
two cards from a standard deck of 52 cards. What
is the probability of drawing two cards of the same
suite in a row? The cards are not replaced
in the deck. 
Choose:




3. 
A new bag of golf tees
contains 10 red tees, 10 orange tees, 10 green tees and
10 blue tees. You empty the tees into your golf
bag. What is the probability of grabbing out two
tees of the same color in a row for you and your
partner?


Choose:




4. 
In a library box, there
are 8 novels, 8 biographies, and 8 war history books.
If Jack selects two books at random, what is the
probability of selecting two different kinds of books in
a row?

Choose:




5. 
What is the probability
that the sum of two die will be greater than 8, given
that the first die is 6?

Choose:




6. 
What is the probability
of drawing two aces from a standard deck of cards, given
that the first card is an ace?
The cards are not returned to the deck.

Choose:




7. 
A new superman MasterCard has been issued
to 2000 customers. Of these customers, 1500 hold a Visa card, 500
hold an American Express card and 40 hold a Visa card and an American
Express card. Find the probability that a customer chosen at
random holds a Visa card, given that the customer holds an American
Express card. 
Choose:




8. 
A survey of middle school students asked:
What is your favorite winter sport? The results are summarized
below:
Favorite Winter Sport 


Grade 
Snowboarding 
Skiing 
Ice Skating 
TOTAL 
6th 
68 
41 
46 
155 
7th 
84 
56 
70 
210 
8th 
59 
74 
47 
180 
TOTAL 
211 
171 
163 
545 
Using these 545 students
as the sample space, a student from this study is
randomly selected.
a.)

What is the
probability of selecting a student whose
favorite sport is skiing? 
b.)

What is the
probability of selecting a 6th grade student? 
c.)

If the student
selected is a 7th grade student, what is the
probability that the student prefers
iceskating? 
d.) 
If the student
selected prefers snowboarding, what is the
probability that the student is a 6th grade
student? 
e.) 
If the
student selected is an 8th grade student, what
is the probability that the student prefers
skiing or iceskating?





