jana has a number cube numbered 1 to 6. she plans to roll the cube 78 times. predict the number of times…
jana has a number cube numbered 1 to 6. she plans to roll the cube 78 times. predict the number of times jana will roll a 2.
Answer
Explanation:
Step1: Calculate probability of rolling a 2
The probability of rolling a 2 on a fair 6 - sided die is $\frac{1}{6}$ since there is 1 favorable outcome (rolling a 2) out of 6 possible outcomes (numbers 1 - 6).
Step2: Predict number of times
Multiply the probability by the number of rolls. So, the predicted number of times to roll a 2 in 78 rolls is $\frac{1}{6}\times78$. $\frac{1}{6}\times78 = 13$
Answer:
13