Math Problem Statement

A fair 6-sided die is rolled 360 times. What is a reasonable prediction for the number of times the event of landing on an odd number will occur?

60 180 240 320

Solution

A fair 6-sided die has three odd numbers: 1, 3, and 5. Since half of the faces are odd (3 out of 6), the probability of rolling an odd number is:

P(odd number)=36=12P(\text{odd number}) = \frac{3}{6} = \frac{1}{2}

Now, if the die is rolled 360 times, the expected number of times an odd number will appear is:

Expected number of odd rolls=P(odd number)×360=12×360=180\text{Expected number of odd rolls} = P(\text{odd number}) \times 360 = \frac{1}{2} \times 360 = 180

Thus, a reasonable prediction for the number of times the die will land on an odd number is 180.

Answer: 180

Would you like more details or have any questions?

Here are 5 related questions to expand on this topic:

  1. What is the probability of rolling a 1 or 2 on a 6-sided die?
  2. If you roll the die 600 times, how many times would you expect to roll a number greater than 4?
  3. What is the expected value of a roll of a fair 6-sided die?
  4. If you roll two dice, what is the probability of getting two odd numbers?
  5. What is the standard deviation of the number of odd rolls in 360 rolls?

Tip: When dealing with probability, multiplying the probability by the number of trials gives you the expected count for that event.

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Math Problem Analysis

Mathematical Concepts

Probability
Expected Value

Formulas

P(odd number) = 3/6 = 1/2
Expected number of odd rolls = P(odd number) * total rolls

Theorems

Law of Large Numbers

Suitable Grade Level

Grades 6-8