SME_8e_Ch_10_Section_3 - CHAPTER 10 SECTION 3 INTRODUCTION...

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

View Full Document Right Arrow Icon
1 CHAPTER 10 SECTION 3: INTRODUCTION TO ESTIMATION MULTIPLE CHOICE 123. Which of the following statements is false regarding the sample size needed to estimate a population mean? a. It is directly proportional to the population variance. b. It is directly proportional to the square of z α / 2 . c. It is directly proportional to the square of the maximum allowable error B. d. None of these choices. ANS: C PTS: 1 REF: SECTION 10.3 124. The sample size needed to estimate a population mean within 2 units with a 95% confidence when the population standard deviation equals 8 is 125. When determining the sample size necessary for estimating the true population mean, which factor is not of our concern when sampling with replacement? 126. To estimate the mean of a normal population whose standard deviation is 6, with a bound on the error of estimation equal to 1.2 and confidence level 99% requires a sample size of at least: 127. The sample size needed to estimate a population mean to within 10 units was found to be 68. If the population standard deviation was 50, then the confidence level used was: a. 99% b. 95% c. 90% d. None of these choices. ANS: C PTS: 1 REF: SECTION 10.3
Image of page 1

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

View Full Document Right Arrow Icon
2
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