Homework due 1/20/2017

Reading assignment for next class: Sullivan 1.1, 2.1

Introduction to Statistics Online Edition (free textbook on vf-tropi.com)

p.1-19, 26-28, 65-85, 101-102

or your own book, the Introductory chapter and the chapter on “Graphs”

Statistics, Parameters and Samples

A September 2005 survey of 2,104 households in the United States found that 65% of

them subscribed to cable television.

1) Identify the population for the survey:

2) How many households are in the sample?

3) Of the households surveyed, how many households subscribe to cable television?

4) A follow-up survey of a sample of 1,200 U.S. households found that 360

households have high-speed Internet connection.

Use this statistic to estimate what percentage of all U.S. households have high-

speed Internet:

The survey showedthat households without Internet connection are twice more likely to

subscribe to a daily newspaper than the households with Internet connection.

The researchers concluded households with Internet connection often get their news

from Web sites instead of daily newspapers.

5) Is this conclusion warranted by the results of the survey? Why or why not? I want

details!

6) A good sample is representative and unbiased:

a) trueb) false

7) Statistics originally was focused on:

a) predicting the outcome of electionsb) taxation and the draft

c) death rates from certain diseasesd) probability of winning at gambling

8) A good sample will be a faster, cheaper, easier and possibly even more accurate

way than a complete census to find out about a population:

a) trueb) false

9) A statistic measures in a sample what a parameter measures in a population:

a) trueb) false

10) In the presidential election of 1948, a major newspaper poll predicted Dewey

would win because:

a) the poll was taken too far before the election took place

b) the poll included mostly male voters

c) the poll was mostly based on a phone survey

d) the poll was limited to large cities

11) The daily maximum temperature at DIA for 2009 is a:a) sampleb) population

12) The speed of every fifth car passing a police speed trap is a:

a) sampleb) population

13) The annual salary of each employee in a company is a:a) sampleb) population

14) The top 5 teams in college football for 2000-2005 is a:a) sampleb) population

15) Field of study of 500 students from a university with 10,000 students is a:

a) sampleb) population

16) The type of pets owned by each U.S. household is a:a) sampleb) population

Rank / Band / Average Ticket Price
1 / The Eagles / $104
2 / Dave Matthews Band / $ 85
3 / The Dixie Chicks / $ 68
4 / Fleetwood Mac / $ 60
5 / Cher / $ 42

The table lists the top five music bands according to the box office ranks and the ticket prices for their concerts as on July 23, this year:

17) The type of data for the

"Band" data is:

a) quantitativeb) qualitative

18) The type of data for the "Rank" data is:19) The type of data for the price data is:

a) quantitativeb) qualitativea) quantitative b) qualitative

20) The daily maximum temperature at DIA for 2009 is: a) qualitative b) quantitative

21) The speed of every fifth car passing a police speed trap is:

a) qualitativeb) quantitative

22) The annual salary of each employee in a company is:

a) qualitativeb) quantitative

23) The top 5 teams in college football for 2000-2005 is: a) qualitativeb) quantitative

24) Field of study of 500 students from a university with 10,000 students is:

a) qualitativeb) quantitative

25) The type of pets owned by each U.S. household is: a) qualitativeb) quantitative