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Q1) Survey of students at certain college illustrated that 60% of them read daily newspaper and 40% read weekly news magazine. Also, if student reads daily newspaper, then chance of reading the weekly news magazine rose to 50%.

i) Determine percentage of students read both?

ii) Find out percentage of students read at least one?

iii) Determine percentage of students read neither?

iv) Determine percentage of news paper readers of a news magazine also read news paper?

Q2) Two letters are chosen at random without replacement from word statistical.

a) Determine the probability that both letters are s?

b) Determine the probability that both letters are the same?

c) If you know both letters are same, determine the probability that both are s?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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