If 20% of all people living in a country X are underweights, then fin..
If 20% of all people living in a country X are underweights, then find the probability that the three people selected at random will be underweight. => 0.04 or 0.8 or 0.008 or 0.5..
In a survey it was found that 20% of people living in a society watch ..
In a survey it was found that 20% of people living in a society watch channel A. If a random sample of 10 people are selected, then find the probability that at most 3 people in the sample watch chan..
In a survey it was found that 20% of people living in a society watch ..
In a survey it was found that 20% of people living in a society watch channel A. If a random sample of 10 people is selected, then find the probability that exactly 5 people in the sample watch channel A. => 0..
40% of the people in a community went to see a basketball match. If 10..
40% of the people in a community went to see a basketball match. If 10 people are selected at random, then find the probability that 6 people went to see the match. => 0.11 or 0.3 or 0.6 or 0.01..
70% of the people in a community are eligible to vote. If 25 people ar..
70% of the people in a community are eligible to vote. If 25 people are selected at random, then what is the probability that exactly 15 of them can vote? => 0.09 or 0.42 or 0.60 or 0.91..
In a survey it was found that 20% of people living in a society watch ..
In a survey it was found that 20% of people living in a society watch channel A. If a random sample of 120 people is selected, then find the standard deviation of the number of people in the sample who watch channel A. ..
In a town T, 30% of the people suffer from some kind of health disorde..
In a town T, 30% of the people suffer from some kind of health disorder. If 12 people are selected at random, then find the probability that none of them suffer from any kind of disorder. => 0.84 or 0.01 or zero or 0.7..
The probability that a person selected prefers to go out on a shopping..
The probability that a person selected prefers to go out on a shopping is 0.7. A random sample of 100 people was selected. Find the probability that the proportion of people who prefer to go out on a shopping is greater..
40% of the people in a town X used the library last year. If 750 peopl..
40% of the people in a town X used the library last year. If 750 people are selected at random, then what is the standard deviation of the number of people who used the library last year? => 13.4 or 180 or 300 or 134..
In a survey conducted, 62% people prefer watching a football match fro..
In a survey conducted, 62% people prefer watching a football match from home. Find the probability that four persons selected at random prefer watching football from home. => 0.38 or 0.148 or 2.52 or 0.238..
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