fatimadavoudian7
fatimadavoudian7 fatimadavoudian7
  • 12-01-2020
  • Mathematics
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A fair die is rolled 30 times. How many times would you expect a 2 or a 6 to be rolled?n

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N1Z6R
N1Z6R N1Z6R
  • 12-01-2020
6 sides on a die:
6*5= 30
5*2 (2 is both numbers) = 10
Probability= 2/6 so 5*2 =10

10
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danialqeem
danialqeem danialqeem
  • 12-01-2020
At least 10 or 5 times.

Explanation: 2 and 6 gives a 2/6 chance of landing on these numbers when rolled once but if it rolled 30 times, the chance would be 60/180 which means that it should be expected to have landed on either of those numbers at least 10 or 5 times.
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