In which of the following research methods, are random sample surveys and structured interviews used to collect data (mostly quantifiable data) and analyzed using statistical techniques?
a. quantitative
b. qualitative
c. random sampling
d. none of the above

The correct answer is option a.

Explanation:

Quantitative research has an application in quantifying the problem by producing numerical data or data, which can be converted into usable statistics. This form of research utilizes measurable data to construct facts and to uncover patterns in research. The quantitative data collection procedures are much more saturated in comparison to qualitative data collection procedures. It comprises various kinds of surveys like paper surveys, online surveys, kiosk surveys, and mobile surveys, face-to-face interviews, longitudinal studies, telephone interviews, and systematic observations, however, in random sampling. In the process, a variety of selection procedures in which sample members are chosen by chance, however, with a known possibility of selection.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

most community's take hundreds of years to become stable