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Question 11(1 point) The calculation of a margin of error requires three numbers.The standard deviation, the number of observations and a test statistic.Which of the

Question 11(1 point)

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 the variable OWL?

a) z/2

b) standard error of the mean

c) standard deviation

d) sample mean

e) t/2

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