15A-Test+6A+Final+KEY-2007 - NAME I.D FINAL 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: NAME: I.D.: FINAL PROBABILITY AND STATISTICS, ECON 15A DECEMBER 14, 2007 1. In a certain town, 20% of the people belong to Club A. The probability of belonging to Club B given that you don’t belong to Club A is 30%. The probability of not belonging to Club B given that you belong to Club A is 90%. What is the probability of belonging to club A given that you belong to club B? You must show work. A) B A A ‘7 ll 5 X TEEN/V) 3'3 P(A\3> Fog x PCBIAD .1, Pa") yfibiAl) BIIA 3. 3; .:r 5, '1 ) Ci 12%,!)4 Rims) .oz'r.zq .Zé '07601 2. There are three red balls, a lue ball, two llow bdls and four green balls. What is the probability of drawing five balls (with replacement) and getting exactly 3 red balls? You must show work. Z N: 5 5! 63>3(7>L .. 5¥fl¥gy%i )1 2.7 X 31 3 5230 =.3 312' "25124 lily!” @ la) (00,000 I :3 = .1323 3. What would be the height of this graph if the y-axis were a density scale? (I’m asking what the value would be at the top of the graph) M 005 a” 5% ”2’ “L - WWUM'L 400 500 000 700 800 EU.“ ‘ '1’5 AM 4. Draw a box-and-whisker graph for the following data: 20, 21,®23, 24, [email protected], 60. Be sure and put values on the x—axis (please draw the plot horizontally), and make sure it is neat and clear (and pl use the entire width of the page). mast; zanS‘lg '5'1H‘6‘SZ ~cz:::_t————————~—\- 4* u 20 '30 (+0 3) 02: .312” 60 S. The binomial distribution is determined by two parameters. What are they? The Poisson distribution is determined by one parameter, what is it? (a A» N> were“) 6-8. A study was done testing to see what the efl'ect of the height of a room had on the desired personal spaces of subject. They tested 48 subjects in a high-ceiling, low-ceiling, and average-ceiling room. Subjects stood with their backs to the wall while a stranger approached. Subjects were told to say stop when the approaching stranger’s nearness made them feel uncomfortable. The distance at which the subject said stop was recorded The color of the room (red, white, blue) was also recorded, as was the sex of the stranger. On average the people in the low ceiling room said stop when the stranger was 5.68 feet away. Identify each variable. Next to it (in parentheses) identify the categories of that variable. lfthere are more than six categories, simply list a few of theta and then write “and so on”. Then next to that state the scale of measurement of the variable. It should look something like: 1. first variable name (category, category, ....) scale of measurement 2. second variable name (category, category, ....) scale of measurement 3. etc. I) HEWLM’ 072001 (HlC-{HIzstéy LoLJB OWlh—‘b-L’ 9K 2) DISTAMCé owned 372mg: (’1Fwtzrezrjm“> IZLSHO 33 60w»Z 0F 1260/1 (zap, wrung, m> WHHJA-L.’ ‘0 694 a" 5% (MALE) W NOMINAL. ...
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