Sometimes change across time
Can the variability for the same thing sometimes change across time, or with other circumstances? If so, can anyone share any examples of this?
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The Institute of Education Sciences determines the high school dropout rate as the percentage of 16- through 24-year-olds who are not enrolled in school and have not earned a high school credential.
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One state lottery has 1000 prizes of $1, 140 prizes of $10, 20 prizes of $70, 5 prizes of $280, 2 prizes of $1300, and 1 prize of $2400. Assume that 32000 lottery tickets are issued and sold for $1. Determine the lottery's expected profit per tick
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It is estimated that 20 percent of the patients at the large practice have reduced mobility. Twenty patients entering the practice are selected at random times. Determine the probability that less than two will have reduced mobility? Determine the
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