Recent content by hb2325

Ah cool, I see it now, thanks a lot for your help!

Thanks - so how I do I find the vertex of the right triangle? I'm kinda confused.

Ok so I use the probability of X=0 for sec A that I found in part a of the question, that's p of a success, and I use the normal approximation of a bernoulli distribution? But I am unsure of how to use the normal dist. to find these values? Please help me my exam is tomorrow :(

Wait would it be a bernoulli distribution?

A university department has 2 secretaries (labelled A and B) who do all the word processing required by the department. The number of misprints on a randomly sampled page typed by secretary i (i=A,B) has a Poisson distribution with Mean Ui independent of the number of misprints on any other...

Circle?

A university department has 2 secretaries (labelled A and B) who do all the word processing required by the department. The number of misprints on a randomly sampled page typed by secretary i (i=A,B) has a Poisson distribution with Mean Ui independent of the number of misprints on any other...

Thanks So all I do is simplify the equation and get y^2 - 8y + x^2 - 6x = 0 and that's it?

Ok so gradient of the first line would be y/(x-6) and 2nd line would be y-8/x and their product should be -1? Or am I thinking about it the wrong way?

[FONT=Verdana]Points (6,0) and (O,8) are the endpoints of the hypotenuse of a [FONT=Verdana]right-angled triangle, whose other vertex is at (x,y). What equation relates x [FONT=Verdana]and y?[FONT=Verdana]Attempt at solution: [FONT=Verdana]So What I am thinking is that the line will be...

Points (6,0) and (O,8) are the endpoints of the hypotenuse of a right-angled triangle, whose other vertex is at (x,y). What equation relates x and y?Attempt at solution: So What I am thinking is that the line will be perpendicular to the line with end points 6,0 and 0,8. So The gradient of...

Firstly thanks for taking the time to help me. About b) The problem is I don't understand what P(Last 3 contain no A's) would be in terms of say how first 3 is 6/9 * whatever and so on? Would it also be 6/9*5/8*4/7? I'm kinda stumped on how to take it. Also Part e) Yeah I overlooked the 3 A's...

[FONT=Verdana]4. An experiment consists of randomly rearranging the 9 letters of the word [FONT=Verdana]TARANTULA into a sequence of 9 letters, where all possible orders of these 9 letters are equally [FONT=Verdana]likely. Find the probability of each of the following events: [FONT=Verdana]( a...

Anyone? Please this is from a past paper that I am attempting since I have an exam on monday.

4. An experiment consists of randomly rearranging the 9 letters of the word TARANTULA into a sequence of 9 letters, where all possible orders of these 9 letters are equally likely. Find the probability of each of the following events: (a) the first three letters include no A's; (b) the first...