Recent content by navi

I have been trying every possible process for this question: For this problem, assume 10 males audition, one of them being Dale, 7 females audition, one of them being Margaret, and 4 children audition. The casting director has 3 male roles available, 1 female role available, and 2 child roles...

It is a WebWork problem and it accepted this as the correct answer: 10/36 + 15/36 - 1/36

Okay, now I understand! I do have a follow up question, though: why would the probability of the union of A and B be 1/36 and not 2/36? Because it could be first dice 2, second dice 6 or first dice 6, second dice 2.

Thank you! I do not understand why you are subtracting the probability of A and B, though. Could you explain to me why?

So I ran into this problem: You roll two fair die. What is the probability of one of the dice showing 2 or the sum being at least 8? I thought it should be: 15/36 for the sum being at least 8 and 10/36 for exactly one dice showing 2, but it tells me it is wrong. I got these numbers by...

HELP There are 8 mice in a cage... 3 white males, 3 gray females, and 2 gray males. Two mice are selected simultaneously and at random, and their colors are noted. Find the pr that at least one mouse is a male given that exactly ones is grey. I am not sure if I set up the tree correctly, so I...

Hi! So I am confused with this problem: Homer watches Monday Night Football with a probability .6, he has pizza on Monday night with a probability .45, and he does both with probability .25. When you call him on Monday night, you learn that he is watching Monday Night Football. What is the...

Could it be C(8,2)? (sorry, I am confused as to when I should use the combination formula and when I shouldnt)

So I am having more problems with my homework... For this problem, assume there are 6 grey females, 2 grey males, 6 white females, and 2 white males. Two mice are randomly selected. What is the probability of selecting two males given that both are grey? So for selecting two males, I was...

I am having a hard time with the following exercise: Assume for this problem that the company has 8 Chevrolets and 4 Jeeps, and two cars are selected randomly and given to sales representatives. What is the probability of both cars being Chevrolets, given that both are of the same make? I...

lol I see, thanks!

Hey! I need help with my Math homework :( The question is the following... There are 5 history courses of interest to Howard, including 3 in the afternoon, and there are 6 psychology courses, including 4 in the afternoon. Howard picks a course by selecting a dept at random, then selecting a...