In the cafeteria, there are 7 teachers, 48 girls, and 45 boys. What is the probability that a person chosen at random from the cafeteria is a boy? A 20 11 11 В 20 D 1/3
In the cafeteria, there are 7 teachers, 48 girls, and 45 boys. What is the probability that a person chosen at random from the cafeteria is a boy? A 20 11 11 В 20 D 1/3
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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Transcribed Image Text:Solve the problems.
1 In the cafeteria, there are 7 teachers, 48 girls, and 45 boys. What is the probability that a
person chosen at random from the cafeteria is a boy?
9.
A
20
11
11
20
D
2 Students in a math class were divided into three groups. Each group was given a paper bag
filled with an unknown number of marbles of unknown colors. For each bag, a marble was
drawn at random and then put back. Each group repeated this procedure until they recorded
50 draws from the bag. The data for the three bags is shown below.
BAG A
BAG B
BAG C
Number of
Number of
Number of
Color
Marbles
Color
Marbles
Color
Marbles
Red
39
Red
10
Red
White
White
15
White
15
Yellow
Yellow
15
Yellow
7
Purple
Purple
10
Purple
25
Choose True or False for each statement.
a. In Bag B, it appears to be equally likely to draw
a white marble as it is a yellow marble.
OTrue
False
b. The probability of drawing a yellow marble from
Bag C is approximately 7%.
OTrue OFalse
c. The probability of drawing a purple marble from
Bag A after 200 draws is likely 0.
True
False
d. If marbles from Bag C were drawn 10,000 times,
about 600 red marbles are likely to be drawn.
True
False
e. Each bag definitely contains an equal number
OTrue False
of marbles.
294 Lesson 31 Experimental Probability
OCurriculum Associates, LLC Copying is na
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