In the annual report, a major food chain stated that the distribution of daily sales at its Detroit stores is known to be bell-shaped, and that 95 percent of all daily sales fell between 19,200 and 36,400.
Based on this information, what were the mean sales?A) Around 20,000
B) Close to 30,000
C) Approximately 27,800
D) Can't be determined without more information.
Question 2
A marginal probability represents the probability ________.
A) associated with the outcomes of each random variable regardless of the value of the other
B) of a change in a random variable due to a change in another random variable
C) associated with the outcomes of two different random variables that occur at the same time
D) that is found by multiplying the joint probabilities of two variables
World map of the distribution of skin color.
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