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Problem: A recent survey discovered that 64% of investors who adopted a bull position lost their invested wealth in less than 6 months after the initiative. Only 11% of bear investors happen to lose their invested wealth in less than 6 months. Suppose that in the oil stock market approximately 26% of its investors belong to bear category. If an individual investor in this market lost her wealth in less than half a year, what is the probability that she is a bull investor? Please provide the complete solution of this problem.
sports authority conducted a research about the demographics of their customers. for the study they collected data
the wall street journals shareholder scoreboard tracks the performance of 1000 major u.s. companies the wall street
consider rolling two fair dice one green and one red. let r be the random variable which determines the face value of
A social worker tracked the depression levels of clients being treated with cognitive-behavioral therapy for depression.
What is the probability that the rate of return on this stock was at least 5%?
If the airline sells 160 tickets for a flight that has only 155 seats, what is probability that a seat will be available for every person holding a reservation and planning to fly?
A 56-question multiple choice test has 4 possible answers for each question and a student chooses the answers to each problem at random. A student selects 16 correct answers.
1. For ?xed B such that P(B) > 0, show that P(·|B) satis?es the axioms of probability.
A company has 70 employees whose salaries are summarized in the frequency distribution below.
A wheel having the numbers 1 through 20 equally spaced about its circumference, is spun, and the number that is on top when the wheel comes to rest is recorded.
Using one mean Z test to test whether or not to support the claim - Is there evidence that the average hours is below 6? Describe.
Explain this result (including the underlying logic of the computations) to a person who understands hypothesis testing involving a single sample and a known population, but knows nothing about t tests.
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