Math Problem Statement
Consider the following data:
x 4 5 6 7 8 P(X=x) 0.1 0.1 0.2 0.2 0.4
Step 5 of 5 : Find the value of P(X>7) . Round your answer to one decimal place.
Solution
We are tasked with finding , which is the probability that takes on a value greater than 7. From the given dataWe are tasked with finding , which is the probability that takes on a value greater than 7. From the given
We need to sum the probabilities for all values of greater than 7, which in this case is only .
Thus, the value of is 0.4.
Do you need more details on probability distributions or have any questions?
Here are five related questions to expand on this topic:
- How do you find the probability of ?
- What is the sum of all probabilities for ?
- How can you verify that the probability distribution is valid?
- What is the expected value of for the given data?
- How would you calculate the variance of this probability distribution?
Tip: The sum of probabilities in any probability distribution must always equal 1.
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Math Problem Analysis
Mathematical Concepts
Probability
Discrete Probability Distributions
Formulas
P(X > 7) = P(X = 8)
Sum of probabilities: ∑P(X=x) = 1
Theorems
Probability Distribution Theorem
Suitable Grade Level
Grades 9-12