A number cube is rolled 310 times and the results recorded: 50 ones, 55 twos, 44 threes, 53 fours, 52 fives, and 56 sixes. What is the experimental probability of rolling an even number, as a percent?
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To find the experimental probability of rolling an even number as a percent, you need to determine the number of times an even number (2, 4, or 6) was rolled, and then divide it by the total number of rolls (310). Finally, multiply the result by 100 to express it as a percentage.
In this case, the number of even numbers rolled (twos, fours, and sixes) is 55 + 53 + 56 = 164.
Therefore, the experimental probability of rolling an even number is 164 / 310.
To express this probability as a percentage, multiply by 100:
(164 / 310) * 100 ≈ 52.9%.
Hence, the experimental probability of rolling an even number is approximately 52.9%.
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http://drdavespsychologypage.homestead.com/Odds__Figuring.pdf