Math Problem Statement
A random variable X follows Binomial distribution, where you roll a die 10 times. What's the probability that you roll a five 6 times?
No Correct Answer
A
0.00013
B
0.000052
C
0.013
D
None of the above
Solution
To solve this, we can use the binomial probability formula:
Where:
- (the number of trials, in this case, 10 rolls of the die),
- (the number of times we want to roll a five),
- (the probability of rolling a five on any single roll),
- (the probability of not rolling a five).
Now, calculate the binomial coefficient :
Then, calculate the probability:
Simplifying the powers:
Now calculate the result:
Thus, the correct answer is:
Hence, the correct choice is C (0.013).
Would you like further details or have any questions?
Here are five related questions for deeper understanding:
- What is the general form of the binomial probability distribution?
- How do you calculate the binomial coefficient ?
- What does the binomial distribution model, and when can it be used?
- How would the probability change if the number of rolls increased?
- What would be the probability of rolling at least one five in 10 rolls?
Tip: The binomial distribution is useful when each trial is independent, and there are only two possible outcomes per trial (success or failure).
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Math Problem Analysis
Mathematical Concepts
Probability
Binomial Distribution
Combinatorics
Formulas
P(X = k) = C(n, k) * p^k * (1-p)^(n-k)
C(n, k) = n! / (k!(n-k)!)
Theorems
Binomial Theorem
Suitable Grade Level
Grades 10-12
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