7, According to a recent poll, about 60% of all American adults owned a cell pho

Question

7, According to a recent poll, about 60% of all American adults owned a cell phone at the tine of the poll. The results are based on telephone interviews with a randomly selected group of 998 adults, conducted March 30 - April 2, 2001. What is the population of interest? (a) All American adults who own cell phones. (b) The 998 adults who participated in the survey (c) All American adults. (d) The survey participants who own cell phones 8. The superintendent of the Dallas Independent School District takes a random sample of 38 schools from all the schools in the district then interviews all teachers at those 38 schools. Identify the type of sampling method used. (a) Stratified (b) Systematic (c) Cluster (d) Random (e) Multistage 9. Describe the shape of the distribution. (a) Skewed to the right (b) Skewed to the left (e) Uniform (d) Bell shaped 10. Classity the variable as malitative or qmatitative The colors of book covers on a bookshelf (a) qualitative b) qnantitative

Explanation / Answer

#7.
Here the population of interest is all american adults
Option C

#8.
Sampling method used is Random
Option D

#9.
Given shape of data distribution is skewed to the left
Option B

#10.
This is an example of qualitative variable
Option A

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