The standard deviation of a sample of 100 elements taken from a very large population is determined to be 60. The variance of the population
A. cannot be larger than 60.
B. cannot be larger than 3600.
C. must be at least 100.
D. can be any value greater or equal to zero.
Answer: D
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Dave Stevens wonders whether the creative idea of using the character "Tom T. Turtle" as an image for marketing a new line of running shoes will be successful. He should suggest to his account representative that a(n) ____ be used to pretest the campaign.
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