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?
Mathematics · Middle School · Tue Nov 03 2020
Answered on
Given the statement:
A number cube is rolled 310 times and the results recorded: 50 ones, 55 twos, 44 threes, 53 fours, 52 fives, and 56 sixes.
Determine the experimental probability of rolling an even number as a percentage.
Solution:
This can be determined by dividing the number of times that the cube is rolled and the result is an even number, and the number the total number of times that the cube is rolled.
Even numbers are the numbers, 2, 4 and 6, therefore, we add the result 2, 4 and 6, then divide it by 310.
= 55 + 53 + 56
= 164
=164/310
=0.53
Since we are given a decimal answer, in order to convert it into percentage, we multiply the decimal by 100. Hence, in converting a percentage into decimal, we divide the percentage by 100.
= (0.53)(100)
=53%
Final answer:
= 53%