Math Problem Statement
Assume that X is a Binomial random variable with
n=59 and p=0.49.
Part I. Compute the mean, the variance, and the standard deviation for such a random variable X.
1. μ= 28.91 Round your answer to 2 decimal places.
2. σ2= Round your answer to 4 decimal places.
3. σ= 3.8431 Round your answer to 4 decimal places.
Part II. Use a calculator or a software to find each of the following probability values.
4. P(X>35)= 0.0436 Round your answer to 4 decimal places.
5. P(X<30)= 0.5616 Round your answer to 4 decimal places.
Solution
To solve the problem regarding the Binomial random variable with parameters and , we can proceed as follows:
Part I: Compute the Mean, Variance, and Standard Deviation
-
Mean ():
-
Variance ():
-
Standard Deviation ():
Part II: Probability Values
For the probability calculations, we can use a binomial calculator or statistical software to find:
-
Probability : Using a binomial distribution calculator:
-
Probability : Using a binomial distribution calculator:
Summary of Results
- Mean
- Variance (rounded to 4 decimal places)
- Standard Deviation (rounded to 4 decimal places)
- Probability
- Probability
Would you like details on any specific part of the solution? Here are some follow-up questions:
- How do you interpret the mean and variance in the context of a binomial distribution?
- What is the significance of the standard deviation in this scenario?
- Can you explain how to use the binomial probability formula?
- What assumptions do we make when modeling a situation with a binomial distribution?
- How would the results change if were to increase or decrease significantly?
Tip: When dealing with binomial distributions, it can be helpful to visualize the probability distribution to better understand the likelihood of different outcomes.
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Math Problem Analysis
Mathematical Concepts
Probability
Statistics
Binomial Distribution
Formulas
Mean (μ) = n × p
Variance (σ²) = n × p × (1 - p)
Standard Deviation (σ) = √(σ²)
Theorems
Binomial Theorem
Suitable Grade Level
Grades 10-12
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