a) Predict the number of 6s you will get if you roll a number cube 30 times.
b) Predict the number of even numbers you will get if you roll a number cube 25 times.
Thanks! :)))
Omg i literally have the same question! LOL.
to solve a, the trick is, 30 divided by 6 is 5 so the answer is 5. hope it helps you!
idk b tho
half of 25
To predict the number of 6s you will get if you roll a number cube 30 times, you need to know the probability of rolling a 6 on a single roll.
For a fair, six-sided number cube, there are 6 equally likely outcomes (numbers 1 to 6). The probability of rolling a 6 on a single roll is therefore 1/6, or approximately 0.167.
Now, to calculate the expected number of 6s in 30 rolls, you can multiply the probability of rolling a 6 on a single roll by the number of rolls:
Expected number of 6s = (Probability of rolling a 6) x (Number of rolls)
Expected number of 6s = (1/6) x 30 = 5
So, the predicted number of 6s you will get if you roll a number cube 30 times is 5.
Similarly, to predict the number of even numbers you will get if you roll a number cube 25 times, you need to know the probability of rolling an even number on a single roll.
In a fair, six-sided number cube, there are three even numbers (2, 4, and 6) out of six total outcomes. So, the probability of rolling an even number on a single roll is 3/6, or 0.5.
To find the expected number of even numbers in 25 rolls, you can multiply the probability of rolling an even number on a single roll by the number of rolls:
Expected number of even numbers = (Probability of rolling an even number) x (Number of rolls)
Expected number of even numbers = (3/6) x 25 = 12.5
Since we cannot have a fraction for the number of events, we round to the nearest whole number. Therefore, the predicted number of even numbers you will get if you roll a number cube 25 times is 13.