Question

Pew Research Center is a nonpartisan polling organization that provides information about issues, attitudes, and trends shaping America. In a poll, Pew researchers found that 73% of teens aged 13–17 have a smartphone, 15% have a basic phone and 12% have no phone. The study also asked the respondents how they communicated with their closest friend. Of those with a smartphone, 58% responded texting, 17% social media and 10% phone calls. Of those with no smartphone, 25% responded texting, 29% social media and 21% phone calls. (Pew Research Center website, October 2015).
Required:
a. One statistic (58%) concerned the use of texting to contact his/her closest friend, if the teen owns a smartphone. To what population is that applicable?
b. Another statistic (25%) concerned the use of texting by those who do not own a smart- phone. To what population is that applicable?
c. Do you think the Pew researchers conducted a census or a sample survey to obtain their results? Why?

Answer 1

Step-by-step explanation:

from the available data in this question,

1.

this population is applicable to those teenagers in the study who are aged 13 to 17 years and who own a smartphone

2.

from the question, this population is applicable to the the teenagers in the study within the age of 13 to 17 years who do not own a smartphone.

3. pew research conducted a sample survey and not a census to obtain their results. it would be illogical and not practical to conduct a census. A sample survey is better for this since it would cost less, save more time and also the members of the survey can easily be picked from the american teenage population.. a census would require data for the full population compared to sample survey which would only require a subgroup of the teenage population.