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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the normal approximation for a binomial distribution with n = 40 and p = 0.5?
π‘ Hint: Calculate np for the mean and np(1-p) for the variance.
Question 2
Easy
In a binomial distribution with n = 50 and p = 0.4, how would you express P(X β€ 10)?
π‘ Hint: Adjust by -0.5 and +0.5.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the approximation for X in a binomial distribution with n = 50 and p = 0.4?
- N(20
- 12)
- N(20
- 15)
- N(10
- 10)
π‘ Hint: Calculate np and np(1-p) first.
Question 2
Using continuity correction, how would P(10 β€ X β€ 20) be expressed?
- True
- False
π‘ Hint: Remember the adjustments made for P(X).
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A company makes 1,000 light bulbs, with a 2% defect rate. Approximate the probability of finding at least 21 defective bulbs in a sample using normal approximation and continuity correction.
π‘ Hint: Use z-score formula to find the probability.
Challenge and get performance evaluation