a)
To find individuals and variables.
a)
Answer to Problem 49E
An individual is “all students in the urban school” and the variables are Eat breakfast regularly and Gender.
Explanation of Solution
First need to understand about individual and variable:
Individual: It is the objects which described by the set of the data.
Variable: It is the topic in which study is investigated.
Therefore, for given study, individual is “all students in the urban school”. The variables are Eat breakfast regularly and Gender.
b)
To find probabilities.
b)
Explanation of Solution
Given:
Male | Female | Total | |
Eats breakfast regularly | 190 | 110 | 300 |
Doesn't Eats breakfast regularly | 130 | 165 | 295 |
Total | 320 | 275 | 595 |
Formula:
Probability that eats breakfast regularly:
Probability that female who eats breakfast regularly:
Probability of females or someone who eats breakfast regularly:
Chapter 5 Solutions
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An Introduction to Mathematical Statistics and Its Applications (6th Edition)
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