Winch of the following cannot be the probability of an event?(A) 32 (B)1.5 (C) 15% (D) 0.7
X speaks truth in 60% and Y in 50% of the cases. Find the probability that they contradict each other narrating the same incident.
There are three coins. One is a two headed coin (having head on both faces), another is a biased coin that comes up heads 75% of the time and third is an unbiased coin. One of the three coins is chosen at random and tossed, it shows heads, what is the probability that it was the two headed coin?
A missing helicopter is reported to have crashed somewhere in the rectangular region shown in Fig. 15.2. What is the probability that it crashed inside the lake shown in the figure?
It is given that in a group of 3 students, the probability of 2 students not having the same birthday is 0.992. What is the probability that the 2 students have the same birthday?
A laboratory blood test is 99% effective in detecting a certain disease when it is in fact, present. However, the test also yields a false positive result for 0.5% of the healthy person tested (i.e. if a healthy person is tested, then, with probability 0.005, the test will imply he has the disease). If 0.1 percent of the population actually has the disease, what is the probability that a person has the disease given that his test result is positive?
Three coins are tossed once. Fmd the probability of getting(i) 3 heads (ii) 2 heads (iii) atleast 2 heads(iv) atmost 2 heads (v) no head (vi) 3 tails(vii) exactly two tails (vm) no tail (ix) atmost two tails