Chapter 3: Q. 55 (page 218)
The table shows a random sample of musicians and how they learned to play their instruments.
Find P(Musician is a male and had private instruction).
Short Answer
The required solution is
Chapter 3: Q. 55 (page 218)
The table shows a random sample of musicians and how they learned to play their instruments.
Find P(Musician is a male and had private instruction).
The required solution is
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Three professors at George Washington University did an experiment to determine if economists are more selfish than other people. They dropped stamped, addressed envelopes with cash in different classrooms on the George Washington campus. were returned overall. From the economics classes of the envelopes were returned. From the business, psychology, and history classes were returned.
Let:R = money returned;E = economics classes; O = other classes
a. Write a probability statement for the overall percent of money returned.
b. Write a probability statement for the percent of money returned out of the economics classes.
c. Write a probability statement for the percent of money returned out of the other classes.
d. Is money being returned independent of the class? Justify your answer numerically and explain it.
e. Based upon this study, do you think that economists are more selfish than other people? Explain why or why not. Include numbers to justify your answer.
Use the following information to answer the next four exercises. Table shows a random sample of musicians and how they learned to play their instruments.
Find P(musician is a female).
Prove that smoking level/day and ethnicity are dependent events.
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