We can expect 15 times an odd number when cube is rolled 30 times .
<u>Step-by-step explanation:</u>
Moises is rolling a number cube, with sides numbered 1 through 6, 30 times. We need to find How many times should he expect to roll an odd number . Let's find out:
We know that , in a cube numbered from 1 to 6 have 3 odd number as : 1,3,5
So , probability for an odd number is :
⇒ ![\dfrac{3}{6}](https://tex.z-dn.net/?f=%5Cdfrac%7B3%7D%7B6%7D)
⇒ ![\dfrac{1}{2}](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B2%7D)
So , Number of we should expect for an odd number when cube is rolled 30 times is :
⇒ ![\dfrac{1}{2}(30)](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B2%7D%2830%29)
⇒ ![15](https://tex.z-dn.net/?f=15)
Hence , We can expect 15 times an odd number when cube is rolled 30 times .