In a box containing 100 bulbs, 10 are defective. What is the probability that out of sample of 5 bulbs none is defective ?
Tap an option to check your answer.
1 markStatisticsProbability and Bayes' theoremSampling with and without replacementModerateabout 1 min
JNU SSS 2020 Question 7: Probability and Bayes' theorem
Answer and worked solution
Checking your account…
Plain-text version
In a box containing 100 bulbs, 10 are defective. What is the probability that out of sample of 5 bulbs none is defective? (A) 1/10 (B) 1/4 (C) (9/10)⁵ = (9/10)⁵ (D) None of the option
Probability and Bayes' theorem has come up 190 times in 7 exams since 2004.
What this question tests
This question is on Sampling with and without replacement, part of Probability and Bayes' theorem in Statistics.
Drawing from a finite population and the hypergeometric probabilities that result.
TestStop has 14 past-paper questions on this subtopic.
Similar questions from other papers
- Conditional Probability can be calculated by
- In a year of 366 days, what is the chance that three persons have different birthdays?
- If we twice flip a balanced coin, what is the probability of getting at least one head?
- Two cards are drawn from a full pack of 52 cards at random. The probability of getting a heart and a diamond is (*rounded off to two decimal places*).
- In a population of men in a city, 3% are observed to suffer from cancer, 15% are found to be smokers, while 10% are noticed to be either smokers or cancer patients. If…
Question from the JNU SSS 2020 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.