B what is the probability of two suicides in one week

This preview shows page 2. Sign up to view the full content.

b. What is the probability of two suicides in one week? EXERCISE 9 Suppose that three identical fair coins are thrown simultaneously. What is the probability that the 10 th trial is the 9 th time that all three show the same face? EXERCISE 10 Let X b ( n, p ). Find the third moment, that is E ( X 3 ). Hint: Start with E [ X ( X - 1)( X - 2)] and use the same trick we used in class for the binomial distribution. EXERCISE 11 Suppose a fair die is rolled 20 times. What is the probability that 1 appears five times, 2 and 3 four times each, 4 and 5 three times each, and 6 once? EXERCISE 12 An urn contains 200 marbles of which 150 are green and 50 are blue. Five marbles are selected without replacement from this urn. Let X be the number of green marbles among the five selected. a. Use SOCR to construct the exact distribution of X . Submit a printout. a. Use SOCR to construct the approximate distribution of X . Submit a printout.
Image of page 2
You've reached the end of this preview.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern