stat test 2 spring 04

stat test 2 spring 04 - Page 1 12 Pts Page 2 12 Pts Page 3...

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

View Full Document Right Arrow Icon
Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Total 12 Pts 12 Pts 12 Pts 10 Pts 13 Pts 25 Pts 17 Pts 101 Pts MATH 147 TEST TWO Spring 2004 March 8, 2004 Name: Section: DIRECTIONS: Show all work. Solutions with no work will receive NO credit. Neatness counts. All necessary tables are provided at the end of the test. Carry out all your calculations to at least two digits to the right of the decimal point. Part I True/False For questions 1 - 4 circle T for true and F for false. (2 points each) 1. T F If the events A and B are independent and the chance of each of these events is greater than 0, they must also be mutually exclusive . 2. T F Among all lines, the one that makes the smallest r.m.s. error in predicting y from x is the Regression line. 3. T F If the graph of averages happens to be a straight line, then it coincides with the regression line. 4. T F A deck of cards is shuffled. The chance that the top card is the jack of clubs or the bottom card is the jack of diamonds is 2/52. Part II Fill in the blank For the following questions, complete the sentence by filling in the blank. (2 points for each blank) 5. Suppose that men always married women who were exactly 8% shorter. The correlation between their heights would be . 6. Two variables have a correlation coefficient of r = 0 . 63. If each of the data items of the first variable are multiplied by 2, the numerical value of the resulting correlation coefficient is . 1
Image of page 1

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

View Full Document Right Arrow Icon
Part III Multiple Choice For the multiple choice questions, circle the answer which best completes the sentence or best answers the question. (3 points each)
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