Probability + exponentiation - practice problems
Number of problems found: 7
- All use computer
It is reported that 72% of working women use computers at work. Choose 3 women at random, find the probability that all 3 women use a computer in their jobs.
- Boys and girls
There are eight boys and nine girls in the class. There were six children on the trip from this class. What is the probability that left a) only boys b) just two boys
We test medicine on 6 patients. For all drug doesn't work. If the drug success rate of 20%, what is the probability that medicine does not work?
Event P has probability of 0.84. What is the probability that the event P occurs in 3, 5, 7 try.
- Event probability
The probability of event P in 8 independent experiments is 0.33. What is the probability that the event P occurs in one experiment (chance is the same)?
The lottery is 60000 elk in which 6200 wins. What is the probability that the purchase of 12 elks won nothing?
What is the probability that a family with 7 childrens have: exactly 6 dívek? 2 dívky and 5 boys? Consider the birth probability of a girl is 48.87% and boy 51.13%.
Probability - practice problems. Exponentiation - practice problems.