{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Test3Front - NAlVfE I.D TEST THREE PROBABILITY AND...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: NAlVfE: I.D.: TEST THREE PROBABILITY AND STATISTICS, ECON 15A NOVEMBER 4, 2011 l. The probability that a student is absent fi‘onr class is 40%. The probability that a student is sick is 20%. The chance that a student is both sick and absent is 10%. Find the probability that the student is sick, given that he is absent. A‘ Aeaazm' BA we): .10 5 6: 510.4 PC I > 196A) 7123 2. At the UCI cafeteria, 80% of the people buy a bag of chips. Of thdse people, 50% also purchase a brownie. What is the chance that a person buys chips and a brownie? t‘hflx .50 r: 3. Not counting trivial cases, if two events are mutual] exclusive, they are: A) always independent, B) sometimes independent, C) never independent. No need to explain. 4. There is a vase with three green balls, four ye ow a s, and five orange balls. If you calculate the probability of drawing an orange ball as 5/ 12, which method of assigning probabilities are you using? A6? A $721012»! 1:39;] 045.55%; i622 MW 5. Using the same vase as in question 4: What is the probability of picking two balls (without replacement} and getting two green balls? - A: era pCAfle) = r1900 x 9131 A) ' ID - 3 Z 5 Z 4 A: x A. 6. Using the same vase as in question 4: What is the probability of picking two balls (without rcpiacement) and getting either a yellow ball on the first pick or an orange ball on the second pick? 4 '5“ we» was» 03> (we B290 F6 Marti/z :E/ZXSII Using the same vase as in question 4: What IS the probability of picking three balls and g at least one yel FCAUBUCD I—* $903303 06) i“(<%2 x741 x é/[o 8. Using the same vase as in question 4. Amy has to reach into the vase and aw bails until she gets a green ball. When she draws her first green ball, she stops and draws no more balls. What' 1s the probability that she drew the green ball on her fourth try? A' agrqizam C: 399 wréifiwu PCA>X PCDDXPZG> yPCp) e WIOJTCZBEBJ D Whézeeu (3/12. x ”0/” x 1/”) x 3/5; 9. 45% of planted flowers receive fertilizer If the flowers receive fertilizer, they grow to their fill] height. If they do not receive fertilizer there IS only a 20% chance of growing to their fill] height. You see a planted flower hat has grown to it full height. What Is the probabihty that It received fertilizer A, )1 CELL. A? FWI’IHzEZ PO39: L’s POMS) 5 Pg» F6515 “affix 51A) I " am 1:51;}; «L: egg-#330357 a: “45", 'f' w55)‘_2 .54, ...
View Full 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