I basically have 3 questions coin probability:
A coin is tossed three times. If A is the event that a tail occurs on the third toss,and B the event that exactly two tails occur in three tosses,show that the events A and B are not independent.
Records in a village show that one out of ten persons is anaemic. If twelve persons from this village are randomly chosen and tested,what is the probability that at least one of them is anaemic? [My Approach: For this question do we have to use Binomial Probability. If so then how??]
The average number of buses entering a bus depot on any day is 10.What is the probability that on a given day less than 6 buses will appear at the bus depot??