The calculation of a margin of error requires three numbers. The standard deviation, the number of...
The calculation of a margin of error requires three numbers. The standard deviation, the number of observations and a test statistic. Which of the following represents the test statistic you must use to to determine the margin of error for the confidence interval for a variable?
options:
a. zα/2
b. sample mean
c. standard deviation
d. tα/2
e. standard error of the mean
Homework Answers
The correct option is zα/2.
Option A
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