Lesson_04_Quiz_Help_02

Lesson_04_Quiz_Help_02 - Use software for the following...

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Use software for the following problem. 1. Suppose that a student needs to buy 6 books for her history course. The number of books that she will be able to find used is a binomial random variable X with n = 6 and p = 0.30. In other words, the probability that she will find any given book used is 0.30, and is independent from one book to the next. What is the probability that she will find exactly 2 used books? There are number of ways to deal with this problem: a. Use Minitab by the following command: click on Calc>Probability Distributions>Binomial then input as the following b. Compute it by hand: Prob(X=2)= 4 2 7 . 0 3 . 0 )! 2 6 ( ! 2 ! 6 =0.3241, see page 293. If the question asks for the probability less than and equal to 2 books, then you need to click on Cumulative probability in the figure above (instead of Probability). If you want to compute it by hand, then you need to use the formula to compute P(X=0), P(X=1), and P(X=2), then you add all three terms.
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2. Use software to answer the following: You just found out that you have been kicked out of your apartment (through no fault of your own!) and need to find a new place to live. Suppose monthly rent for an individual is a normally distributed random variable with a mean of 334 dollars and a
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Lesson_04_Quiz_Help_02 - Use software for the following...

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