Three professors at a university did an experiment to determine if economists ar

Question

Three professors at a university did an experiment to determine if economists are more selfish than other people. They dropped 64 stamped, addressed envelopes with $10 cash in different classrooms on the campus. 42% were returned overall. From the economics classes 55% of the envelopes were returned. From the business, psychology, and history classes 33% were returned.

• R = money returned
• E = economics classes
• O = other classes

Part (a)

Write a probability statement for the overall percent of money returned.
P

=

Part (b)

Write a probability statement for the percent of money returned out of the economics classes.
P

   ? | AND OR

=

Part (c)

Write a probability statement for the percent of money returned out of the other classes.
P

   ? AND | OR

=

Explanation / Answer

a) The overall percent of meoney returned is P(R) = 0.42

b) The probability of money returend out of economic class P(E) = 0.55

c) Probability of money returned out of other classes P(O) = 0.33

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.