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Question
a die is a small cube used in games of chance. it has six sides, and each side has 1, 2, 3, 4, 5, or 6 dots painted on it. if you roll a die, the number 4 should come up about 1 time out of every 6 times the die is rolled. if you roll a die 396 times, about how many times do you expect the number 4 to come up? the number 4 should come up about times.
Step1: Identify probability
The probability of rolling a 4 on a fair - six - sided die is $\frac{1}{6}$.
Step2: Calculate expected number
Multiply the total number of rolls by the probability. Let $n$ be the number of times we expect 4 to come up. We have $n = 396\times\frac{1}{6}$.
$n=\frac{396}{6}=66$.
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66