The Internet Is Increasingly Available to the General Public, and This

question 3

Essay

The Internet is increasingly available to the general public, and this has not goneunnoticed by those who construct and give surveys. Researchers are using electronicsurveys more and more, which naturally leads to questions about the usefulness ofelectronic surveys compared to traditional mail and telephone surveys. One veryimportant aspect of surveys is the response rate. To study the difference in responserates between electronic and postal surveys, 377 college faculty members randomlyselected from a list of members in a single professional membership, the Mid-SouthEducational Research Association. Each person was assigned at random to eitherreceive the survey by the U. S. Postal Service (USPS) or by email. There were 189people in the USPS group and 188 people in the email group. Each group was sent afollow-up notice two weeks after the initial mailing. Forty-eight of the USPSdelivered surveys were returned before the follow-up notice, and 24 of the electronicsurveys were returned before the follow-up notice.
(a) Construct and interpret a 95% confidence interval for the difference inproportions of surveys returned before being sent a follow-up notice for the mailand the email survey.
(b) In the context of this study, discuss the statistical significance and practicalsignificance of the results.
(c) To whom do you feel the results of this study can be generalized?
Justify yourresponse in a few sentences.

---

Definitions:

Recessive Genes

Genes that are expressed in offspring only when inherited from both parents, as opposed to dominant genes, which are expressed when inherited from at least one parent.

Dominant Genes

Genes that express their traits when present in an organism, overpowering the effects of recessive genes if both are present.

Critical Periods

Critical periods are specific times during early life when the development of particular abilities, behaviors, or characteristics is most susceptible to environmental stimuli.

Environment

The surrounding conditions and influences affecting the growth or development of living organisms.