Solution for QID #70147: 1) Suppose that a box contains 8 cameras and that 3 of them | StudyHelpMe

1) Suppose that a box contains 8 cameras and that 3 of them are defective. A sample of 2 cameras is selected at random. Define the random variable X as the number of defective cameras in the sample. Hint: Make a probability tree for selecting 2 cameras without replacement. Write the probability distribution for X. k P(X=k)       What is the expected value of X? 2.) Assume that a procedure yields a binomial distribution with a trial repeated n=5n=5 times. Find the probability distribution given the probability p=0.614p=0.614 of success on a single trial. Report answers accurate to 4 decimal places. k P(X = k) 0   1 .0682 2   3   4 .2743 5   3.) Suppose that 65% of all voters prefer Candidate A. If 10 people are chosen at random for a poll, what is the probability that exactly 3 of them favor Candidate A?