In a game the player wins if he rolls a 4 on a number cube. if the number cube is rolled 24 time, then what is the reasonable prediction for the number of unsuccessful rolls?

The player wins if he rolls a 4 on the number cube.

Total number of outcomes on number cube = {1,2,3,4,5,6}

Probability of winning =

If the number cube is rolled 24 times.

Therefore, the reasonable prediction for the number of successful rolls

=

= 4.

Therefore, the reasonable prediction for the number of unsuccessful rolls

= Number of times number cube rolled - reasonable prediction for the number of successful rolls

= 24 - 4

= 20.

Therefore, the reasonable prediction for the number of unsuccessful rolls is 20.

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