cindytest-solution

cindytest-solution - York University MATH 1131(FALL 2011):...

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

View Full Document Right Arrow Icon
York University MATH 1131(FALL 2011): Introduction to Statistics Midterm Examination – Wed, Oct 26, 2011, 7:00 p.m.–7:50 p.m. Last Name: Given Names: Student Number: Signature : DO NOT WRITE IN THIS AREA Read the following instructions carefully 1. Students are allowed to bring: a. One 1-sided 8.5”x11” formula sheet (only formulas are allowed and no definitions nor examples) Put your name on the formula sheet as we will collect the formula sheet with your test papers. b. Calculator(s) (cannot use laptop, cell phone or ipad as calculator) 2. All work must be done in the free space provided be- low for each problem or on the back of the preceding page . 3. No other sheets of paper will be accepted or marked. 4. This exam consists of 11 pages in total. Last 4 pages contain Binomial Distribution Cumulative Probabili- ties tables and Standard Normal Cumulative Proba- bilities tables. Question Max Score Your Score 1 15 2 10 3 10 4 10 5 10 TOTAL 55 1
Background image of page 1

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

View Full DocumentRight Arrow Icon
Question 1: (15 marks) a. The following stem-and-leaf plot shows the waiting time (in minutes) of several cus- tomers before they were served at the checkout counter. Leaf Unit = 0.1 0 48 1 134688 2 023457899 3 12456778899 4 00123334455567789 5 011223445667888 6 1123334556778 7 0223445789 8 013466 9 0127 10 017 11 25 12 79 i. (1 mark) Describe the shape of the stem-and-leaf plot. SOLUTION: positively skewed (or skewed with a long right tail) ii. (5 marks) Report the five-number summary. SOLUTION:
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 7

cindytest-solution - York University MATH 1131(FALL 2011):...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online