1 what is the probability that o more than four out of fifteen people used an online travel website when they booked their hotel?2 out of fifteen randomly selected people how many would you expect to use an online travel website to book their hotel, give or take how many? find the mean amd standard deviation.3 playing a certain game on each play you have a 40% chance of winning , let x = the number of trials until three successes. whats the probablity that you will have your third success on the third trial?4 you roll a die until obtianing three 1s what s the probability of rolling the die at least six times?5 draw five card without replacement let x = the number of reds find the expected value and variance of x.6 an opinion poll have 1000 voters in total, 3 candidates A?B?C 400 are in favor f A, 400 are favor of B , and 200 are favor of C. If you poll ten voters at random, what is the probability that there are 7 in favor of A 2 favor of B and 1 in favor of C?