Solution Concordia University Department of Economics ECON Sections C D CC Instructors Elliston I Huq G

Solution Concordia University Department of Economics ECON Sections C D CC Instructors

of Economics ECON Sections C D CC Instructors Elliston I Huq G Tsoublekas Winter ASSIGNMENT

Solution Concordia University Department of Economics ECON Sections C D

CC Instructors Elliston I Huq G Tsoublekas Winter ASSIGNMENT

Solution Concordia University Department of Economics ECON Sections

Solution Concordia University Department

Category: | General |

Words: | 1050 |

Amount: | $12 |

Writer: |

Paper instructions

In a new poll with regard to the future of the Canadian Senate, 70% of the respondents indicated that they would like to have a vote with respect tot he upper chamber's future. Furthermore, 50% of the respondents said they would like to see the Senate abolished, while 40% of the respondents said they would like it to be kept as is. If keeping the Senate or abolishing it represents two mutually exclusive events, what is the probability that a randomly chosen respondent would belong to either of the two groups?1
Concordia University
Department of Economics
ECON 221 – Sections C, D, CC
Instructors: S. Elliston, I. Huq, G. Tsoublekas
Winter 2016 – ASSIGNMENT 1
Due on February 12, 2016
Name:
I.D.
Section:
1.
A manufacturer of network computer server systems is interested in improving the customer support service.
As a first
step, its marketing department has been charged with the responsibility of summarizing the extent of customer problems
in terms of system downtime.
The 40 most recent customers were surveyed to determine the amount of downtime in
hours they had experienced in the previous month. The survey data are shown below.
[The calculations and the graph for this exercise must be done in Excel.
With the data on class intervals and frequencies
that are shown below, you will create a table in Excel with the necessary detailed column calculations that will be used
as a basis to answer sub-questions (a), (b) and (c).
You will paste your table here.]
(15 points)
a)
Construct a cumulative frequency distribution, and a cumulative relative frequency distribution. (3 points)
b)
Using the appropriate formula for grouped data, calculate the mean number of hours in downtime. Use the table
provided above for your computations. (4 points)
c)
Using the appropriate formulas for grouped data, calculate the variance and the standard deviation. Use the table
provided above for your computations. (4 points)

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