25 Survey Problems

Document Sample
25 Survey Problems Powered By Docstoc
					2.5 Survey Problems
                                    The results of a survey are
                                    represented in the Venn diagram.
                                    The survey questions were:
          donate         serve      Would you be willing to donate
                   120
           370           220        blood?
    290                             Would you be willing to serve
                                    breakfast?

How many students are                         How many students are
willing to donate blood?
                                              willing to donate blood
How many students are                         or serve breakfast?
willing to serve breakfast?
How many students are willing to        120
donate blood and serve breakfast?
                                      The results of a survey are
                                      represented in the Venn diagram.
                                      The survey questions were:
         donate         serve         Would you be willing to donate
                  120
          370           220           blood?
   290                                Would you be willing to serve
                                      breakfast?
How many students are
willing to donate blood but              How many students are not
                                370      willing to donate blood nor
not serve breakfast?
                                         serve breakfast? 290
How many students are
willing to serve                220      How many students were
breakfast but not                        surveyed?
donate blood?
                                The results of a survey are
                                represented in the Venn diagram.
        classical        jazz   The survey questions were:
                    20          Do you like to listen to classical
         55              70
   30
                                music?
                                Do you like to listen to jazz?

How many people like to          How many people like to
listen to classical music?       listen to classical music and
                                 jazz?         20
How many people like             How many people like to listen
to listen to jazz?               to classical music or jazz?
                                   The results of a survey are
                                   represented in the Venn diagram.
        classical        jazz      The survey questions were:
                    20             Do you like to listen to classical
         55              70
   30
                                   music?
                                   Do you like to listen to jazz?

How many people like to listen     How many people do not like to
to classical music but not jazz?   listen to classical music nor jazz?
              55                                  30
  How many people like to          How many people were surveyed?
  listen to jazz but not
  classical music?
              70
                                n(A) = 75

       A          B             n(B) = 90
            20
     55            70
30

                                 75 + 90 – 20 = 145


There are 78 elements in set C. There are 94 elements in set D.
In a Gallup poll, 2000 adults were selected at random and asked to
agree or disagree with the following statement:

Job opportunities for women are not equal to those for men.

The results of the survey showed that
1190 people agreed
700 women agreed                               1190 – 700 = 490
Half of the people surveyed were women

                                  1000 – 700 = 300
                                  1000 – 490 = 510
     agree    700   women         How many men agreed with
        490         300           the statement? 490
                            510
                                  How many men disagreed 510
                                  with the statement?
In a poll, 1000 adults were selected at random and asked to
agree or disagree with the following statement:

Canada is more important to the United States than Mexico.

The results of the survey showed that
550 people agreed
50 Hispanics agreed                                 550 – 50 = 500
250 of the people surveyed were Hispanic            250 – 50 = 200
                                    1000 – (500 + 50 + 200) = 250
                                   How many non-Hispanics agreed
                                   with the statement? 500
    agree    50   Hispanic
       500                         How many non-Hispanics
                   200
                                   disagreed with the statement?
                             250
                                                     250
                               How many people did not like any of
                               the categories? 16
      Comedies       Dramas
                 7
                         3     How many people liked only    10
       9
                 6             science fiction?
           4         5
 16                             How many people liked         41
          Science fiction       comedies or science fiction?
               10                How many people liked dramas
                                 but not science fiction?    10
Sixty people responded to a movie survey.
6 people liked comedies, dramas and science fiction
13 people liked comedies and dramas
10 people liked comedies and science fiction
11 people liked dramas and science fiction
26 people liked comedies
21 people liked dramas
25 people liked science fiction

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:4
posted:7/11/2013
language:English
pages:9
Jun Wang Jun Wang Dr
About Some of Those documents come from internet for research purpose,if you have the copyrights of one of them,tell me by mail vixychina@gmail.com.Thank you!