the probability that an individual is left-handed is 0.13 In a class of 42 students, what is the probability of finding 5 left-handers

Two natural events can result in the failure of a dam. Firstly, a very high flood, exceeding the design capacity of its spillway (event A), may destroy it. Secondly, a destructive earthquake (event B) can cause a structural collapse. Let P = 0.04 and P=0.02 denote the respective probabilities of...

I need help with these questions, I just can't seem to get them right. 1. Separate the 12 face cards from the rest of the deck. Assume that the remaining cards have been shuffled. Select THREE cards from the pile of face cards (i.e. 3 jacks, 3 queens, or 3 kings) from the pile? 2....

One Ivy League University has found that 40% of its students withdraw without completing the intro statistic course. Assume thst 15 students have registered for the course this semester, find the probability that a. three or fewer will withdraw b. exactly five will withdraw c. what is the means...

I have a problem: if z=x+y then f(z)=? (f(x,y):is given) please help me