Question

the survey has bias. (a) determine the type of bias. (b) suggest a remedy. a polling organization conducts a study to estimate the percentage of households that have more than one computer. it mails a questionnaire to 1226 randomly selected households across the country and asks the head of each household if he or she has more than one computer. of the 1226 households selected, 30 responded. (a) which of these best describes the bias in the survey? nonresponse bias sampling bias response bias undercoverage bias (b) how can the bias be remedied? a. the polling organization should try contacting households that do not respond by phone or face - to - face. b. the polling organization should only select households in a single state. c. the polling organization should mail the questionnaire to a greater number of households. d. the polling organization should mail the questionnaire to each person in the households.

Explanation:

(a) Nonresponse bias occurs when a large portion of selected participants do not respond to a survey. Here, only 30 out of 1226 households responded, which is a very low response rate, fitting this bias type.
(b) To address nonresponse bias, following up with non-responding households via alternative methods (like phone or in-person) encourages more to participate, reducing the bias from missing data.

Answer:

(a) Nonresponse bias
(b) A. The polling organization should try contacting households that do not respond by phone or face-to-face.