D.accurate
Suppose that a group of 100 consumers are asked to rate how much they liked the taste
of a new soft drink on a 5-point scale (where 5 = good taste and 1 = poor taste) and the
mean rating was 4.2 with a standard deviation of 1.48. Suppose, further, that the
standard error of the mean for this study was 0.15. If you wanted to find the 95 percent
confidence interval (two-tailed test), and if the Z-value at the 0.05 level of significance
is 1.96, the confidence interval lies between _____.
A.3.91 and 4.49
B.4.17 and 4.23
C.3.98 and 4.42
D.4.00 and 5.00
Which of the following eliminates the counting of names in a list and subjectively
determining whether a telephone directory listing is a business, institution, or legitimate
household?
A.mixed-mode survey
B.predictive calling
C.computer-assisted telephone interviewing (CATI)
D.random digit dialing