{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

HW4-Solutions.pdf - \os:t:tt 10 AAA 1.8"1 11 1"2 1/4...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
&,\os:t:tt 10/ : AAA 1.8 "1. 11 1"2. 1,/4 1'lb ],18l'y CHAPTER 7 Exercise 8 a. The probability distribution of X is shown below. .7 .1I .S f ~ .. .3 .2 .1 b. The probability that a child receives exactly 3 diagnostic services is 0.03!. c. The probability that a child receives at least 1 service is P(X ~ 1) = 1 - P(X = 0) 1 - 0.671 = 0.329. The probability that a child receives 4 or more services is P(X ~ 4) = P(X = 4) + P(X = 5+) = O.OlD + 0.006 = 0.016. d. The probability that a child receives exactly 3 services given that he or she receives at least 1 service is P(X = 3) P(X = 3 I X 2: 1) = P(X 2: 1) 0.031 = 0.329 = 0.094. -
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Exercise 11 a. The ten persons can be ordered in 1O! = 3,628,800 different ways. b. Four individuals can be selected in 1O! 4!6! = 210 different ways. c. The probability that exactly three of the ten individuals are left-handed is P(three left-handers) = (~) (0.098)3(0.902)10-3 = 0.055. d. The probability that at least six of the ten persons are left-handed is P(at least six) = P(six) + P(seven) + P(eight) + P(nine) + P(ten) = C~) (0.098)6 (0.902)4 + C~) (0.098f (0.902)3 + C~) (0.098)8 (0.902)2 + C~) (0.098)9 (0.902)1 + G~) (0.098)10 (0.902)0 0.0001.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ 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