For the interval estimation of ? when ? is known and the sample is large, the proper distribution to use is the
A. normal distribution.
B. t distribution with n degrees of freedom.
C. t distribution with n + 1 degrees of freedom.
D. t distribution with n - 1 degrees of freedom.
Answer: A
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Which of the following involves researchers delivering short questionnaires to people they approach in shopping malls or retail outlets?
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List the guidelines for using humor in your presentations and speeches
What will be an ideal response?
Consider the Demand for Microwave Ovens dataset. What is the total demand corresponding to random numbers 87, 61, 99, 26, 93, and 31?
a. 17
b. 18
c. 19
d. 20