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Cookie sales at a bakery follow a normal distribution with expected value of 10000 cookies. On 90 percent of days, the bakery sells less than 150000 cookies. The likelihood that sales drop below 5000 cookies is closest to?
A:5%
B:10%
C:15%
D:20%
Statistics and Probability, Statistics
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A die is rolled four times. What is the probability that the sum of four numbers equals 13?
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