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WorksheetsProbability Binomial
Total questions: 10
Worksheet time: 8mins
Name
Class
Date
1.
The American Red Cross says that about 11% of the U.S. population has Type B blood. A blood drive is being held at your school.What is the probability that exactly 2 of the first 20 blood donors have Type B blood?
a)
0.316
b)
0.282
c)
0.001
d)
Not here
2.
The American Red Cross says that about 11% of the U.S. population has Type B blood. A blood drive is being held at your school. What is the probability that at least 2 of the first 10 blood donors has Type B blood?
a)
0.088
b)
0.697
c)
0.214
d)
0.303
3.
Which of the following is false about binomial probabilities?
a)
Their distributions are approximately symmetric.
b)
Trials must be fixed.
c)
Events musts be independent.
d)
The probability of success must be 0.50
4.
When rolling a fair die 100 times, what is the probability of rolling a "4"exactly 25 times?
a)
0.010
b)
0.167
c)
0.25
d)
0.021
5.
Which one of these variables is a continuous random variable?
a)
The time it takes a randomly selected student to complete an exam.
b)
The number of tattoos a randomly selected person has.
c)
The number of women taller than 68 inches in a random sample of 5 women.
d)
The number of correct guesses on a multiple choice test.
6.
When rolling two dice, the probability of rolling doubles is ⅙. Suppose that a game player rolls the dice five times, hoping to roll doubles. What is the probability the player gets doubles less than three times in 5 attempts?
a)
0.161
b)
0.965
c)
0.015
d)
0.997
7.
Find the mean of the probability distribution.
a)
85
b)
83.2
c)
87.1
d)
84.4
8.
Classify: The numbers of cheeseburgers a fast-food restaurant serves each day
a)
None of these
b)
Abstract
c)
Continuous
d)
Discrete
9.
If you flip one coin and then roll a die, how many possible outcomes can you get?
a)
6
b)
12
c)
7
d)
0
10.
An algebra 2 test has 6 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 6 questions, what is the probability that you get exactly 3 questions correct? (You need to figure out the p value first. It is not given to you.)
a)
0.962
b)
0.132
c)
0.831
d)
0.250
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