Solutions01 - Solutions to Homework 1 Ans 1 The following...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Solutions to Homework 1 Ans 1. The following is a dotplot of the interval times: 91 84 77 70 63 56 49 42 INTERVAL Dotplot of INTERVAL Ans 2. The following is a stemplot of the interval times: Stem-and-leaf of INTERVAL N = 222 Leaf Unit = 1.0 3 4 234 11 4 55788999 39 5 0011111111111111222333334444 54 5 555566677778889 67 6 0000111112223 78 6 66677788999 107 7 00000111112222233333333344444 (44) 7 55555555555555566666666667777777788888889999 71 8 0000000000000111111111222222222233333333444444444 22 8 5666666788899 9 9 00011134 1 9 5
Image of page 1

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

View Full Document Right Arrow Icon
Ans 3. The following is a histogram of the interval times with bins of width 3 minutes starting from 41. 95 86 77 68 59 50 41 35 30 25 20 15 10 5 0 INTERVAL Frequency Histogram of INTERVAL Ans 4. The following is a cumulative relative frequency histogram of the interval times: 90.0 82.5 75.0 67.5 60.0 52.5 45.0 100 80 60 40 20 0 INTERVAL Cumulative Percent Histogram of INTERVAL
Image of page 2
Ans 5. MINITAB yields the following descriptive statistics for interval times: Descriptive Statistics: INTERVAL Variable N N* Mean SE Mean StDev Minimum Q1 Median Q3 INTERVAL 222 0 71.009 0.859 12.799 42.000 60.000 75.000 81.000 Variable Maximum INTERVAL 95.000 This, clearly is consistent with the fact that the mean is 71 minutes and the median is 75 minutes.
Image of page 3

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

View Full Document Right Arrow Icon
Image of page 4
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