These are practice questions from tests and exams in various years (may be from various courses). No solution will be provided. I try to give you more practice questions in probabilities because you guys do need practice in these questions. Question 1: Th
Solution for Mid Term Test Question 1: a. r =
(71)
2.521
4.6667(0.0388)
= 0.9874
Since it is close to +1, we have a strong positive linear association between T and S . b. b = 0.9874 = 0.09, and a = 1.792 0.09(4) = 1.432 = 1.432 + 0.09T Therefore S For e
Practice Questions - most of them are from previous years exams Question 1: As a check on the quality of the paper used for packaging, a random sample of ten pieces of paper is selected each hour from the previous hours production, and a strength measurem
MATH 1131 3.0 - Fal 2010 Solution for Assignment 4 Question 1: It is given that n = 2815, x = 1885 and hence p = 0.6696 a. the required CI is 0.6696 1.82 0.6696(1 0.6696)/2815 (0.6531, 0.6861). b. The margin of error is 0.0165. Based on the data, with 93.
MATH 1131 3.0 - Fall 2010 Assignment 4 (Due Date: December 8, 2010) Question 1: In the 2006 General Social Survey, 2815 individuals were asked if they favored or opposed death penalty for people convicted of murder. 1885 of those survered were in favor of
MATH 1131 3.0 - Fal 2010 Solution for Assignment 3 Question 1: a. X Binomial(5, 0.8). Therefore P (X = 5) =
5! (0.8)5 (0.2)0 5!0!
= 0.32768
b. Given n = 250, p = 0.8 and we have np 5 and n(1 p) 5) P ( 0.75) = P p.8 p 0.75.8 P (Z 1.98) = 0.9761
0.8(0.2)/25
MATH 1131: ASSIGNMENT 3
1. A large video rental chain recently decided to change its rental policy, allowing an unlimited return date instead of requiring that movies be returned the next day. The marketing team reasoned that this would greatly increase t
MATH 1131 3.0 - Fall 2010 Solution for Assignment 2 Question 1: Students Absent Grade Infrequently Low 1 Medium 6 High 8 Total 15 Medium Absenteeism 9 35 9 53 Absent Frequently Total 8 18 7 48 2 19 17 85
18 85
a. Probability that a randomly selected stude
MATH 1131 3.0 - Fall 2010 Assignment 2 (Due Date: October 20, 2010) Question 1: A schools administrators are concerned about absenteeism at their school and the eect it has on students grades. The following data were compiled, based on a sample of student
MATH 1131: ASSIGNMENT I SOLUTIONS/ANSWERS 1. The three different bar charts are given below.
geographic order
0.7 0.0 0.1 0.2 0.3 0.4 0.5 0.6
Vancouver
Edmonton
Saskatoon
Winnipeg
Toronto
Montreal
St.John
Halifax
Pareto chart
0.7 0.0 0.1 0.2 0.3 0.4 0.5 0
MATH 1131: ASSIGNMENT I
1. Read the attached article suburbansprawl.pdf. The second last paragraph contains data on percentage of overweight and obese individuals in different cities in Ontario. Create two bar graphs of this data - in the rst, order the c