26. A number cube is rolled 75 times and the results are recorded as follows: 15 ones, 13
twos, 8 threes, 12 fours, 15 fives, and 12 sixes.
What was the probability of rolling a 2 or 3?

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1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?