If a researcher wants a 95.5% level of confidence (Z-Value = 2.00) and has determined the acceptable precision width to be 80, the sampling error on either side of the mean would be
A) 40
B) 80
C) 120
D) 160

Question

Quizplus · Accepted Answer

The acceptable precision width (80) represents the total width of the confidence interval, which includes the sampling error on both sides of the mean. Since this width is the total span, the sampling error on either side of the mean would be half of this, which is 40.

If a Researcher Wants a 95