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# MA8391 Important Questions Probability and Statistics Regulation 2017 Anna University

## MA8391 Important Questions Probability and Statistics Regulation 2017

### Sample MA8391 Important Questions Probability and Statistics

1.
What is the probability that a non-leap year selected at random will contain 53
Tuesdays?
BTL1 Remembering
2.
A is known to hit the target in 2 out of 5 shots. B is known to hit the target in
3 out of 4 shots. Find the probability of the target being hit when both try?
BTL1 Remembering

4.
The mean of Binomial distribution is 20 and standard deviation is 4. Find the
parameters of the distribution.
MA8391 Important Questions Probability and Statistics
If 3% of the electric bulbs manufactured by a company are defective, Find
the probability that in a sample of 100 bulbs exactly 5 bulbs are defective.
BTL1 Remembering
6.
Suppose that, on an average , in every three pages of a book there is one
typographical error. If the number of typographical errors on a single page of
the book is a Poisson random variable. What is the probability if at least one
error on a specific page of the book?
MA8391 Important Questions Probability and Statistics
The probability that a candidate can pass in an examination is 0.6. What is the
probability that he will pass in third trial?
BTL2 Understanding

9.
Suppose that the life of industrial lamp(in thousands of hours) is
exponentially distributed with mean life of 3000 hours, find the probability
that the lamp will last between 2000 and 3000 hours.
MA8391 Important Questions Probability and Statistics
10. State the memory less property of the exponential distribution.

 Subject Name Probability and Statistics Subject Code MA8391 Regulation 2017 File PDF