Practice Final Exam AU10

Which of the following conditions must be met in

Info icon This preview shows pages 7–9. Sign up to view the full content.

View Full Document Right Arrow Icon
1. Which of the following conditions must be met in order to use the normal approximation for a binomial? a. n > 30 b. np≥ 10 and np(1-p) ≥10 c. np≥10 and n(1-p)≥10 d. None of the above 2. If X has a Normal Distribution, then the sampling distribution of X : 3. Suppose Bob’s 95% confidence interval for the population mean is (70, 90). From this information you can determine what the value of X was for Bob’s data. a. YES b. NO 4. Which of the following DOES NOT make the margin of error of a confidence interval smaller? 5. It is possible to have two events where P ( A ) = 0.40, P ( B ) = 0.50, and P ( A and B ) = 0.30. a. True b. False 6. A random sample of size n is selected from some distribution X . As n increases , which of the following statements is true about X ? 7. x X μ = . a. True b. False 8. In a five-number summary, if you take Q 3 + Q 1 and divide by 2, you will get the median (Q 2 ). a. True b. False 7
Image of page 7

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

View Full Document Right Arrow Icon
9. Given this table of data, what is the chance that a male will be home for break? a. 55/200 b. 55/150 c. 55/110 d. 55% Female Male Total Home for break 75 55 150 Not home for break 15 55 50 Total 90 110 200 10. You need to central limit theorem to be able to say that x x μ μ = . a. True b. False 11. You and Bob want to estimate the average weight of 5 year old children. Bob’s confidence interval has a margin of error of plus or minus 6 pounds. You want your margin of error to be 1/3 that size. Compare your sample size to Bob’s:
Image of page 8
Image of page 9
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