Download An honest die was rolled many times and the number of 1`s that

4.2 Definition of Probability
PROBABILITY=
The probability of an event that is impossible is 0. NULL EVENT
The probability of an event that is certain is 1. CERTAIN EVENT
All probabilities fall between 0 and 1.
Write the number to show the probability for each of these. It will be a 0, 1, or a fraction between 0 – 1.
1. The sun will rise tomorrow.
2. A coin toss will yield heads.
3. 2 odd numbers will have an even sum.
4. The sun will set in the east.
5. You’ll spend the summer on the moon.
6. Winter will follow fall.
7. The next president will be from Delaware.
1st QUARTER – ROLL OF THE DICE
8. How many ways can a six occur?
9. How many different numbers can you roll?
Find the probabilities for one die.
a. What is the probability that you will roll a 5?
b. What is the probability that you will roll a 3 or a 1?
c. What is the probability that you roll a number less than 2?
d. What is the probability that you will roll a number larger than 3?
SAMPLE SPACE:
2nd QUARTER. Two dice are rolled at the same time. Find the sample space.
e. With two dice, what is the probability that you will roll a number larger than 10?
f. With two dice, what is the probability that you will roll an even number?
3rd
4.2 Definition of Probability
QUARTER – Use the table to find the following probabilities.
Year
Family Guy
The Simpsons
Sportscenter
CSI
Freshman
76
43
68
54
Sophomores
62
48
79
45
Juniors
57
23
85
58
Seniors
81
34
68
57
Find the probability that a randomly selected student
a. Watches Family Guy.
b. Is a sophomore that watches The Simpsons.
c. Is a senior.
d. Is a senior who watches Sportscenter.
4th QUARTER – Answer the following problems.
10. A family plans to have 3 children. What is the probability that all 3 children will be girls?
11. A wheel of fortune has the numbers 1 through 50 painted on it. Tickets numbered 1 through 50
have been sold. The wheel will be rotated and the number on which the pointer lands will be the
winning number. If the pointer stops on the line between the two numbers, the wheel must be
turned again. What is the probability that
a. Ticket number 42 wins?
b. A ticket between the numbers 1 and 50 wins?
c. Ticket number 51 wins?
CHALLENGE
12. It has been found that 65% of professional football players suffer serious injuries as a result of their
career. What is the probability that a retired NFL player did not suffer a serious injury?