00:01
Ok, we have here the fact that 50 % of people have a college education, which means the p of college education is 0 .5.
00:20
And that's the p value.
00:25
And here we have 10 people.
00:27
So 10 is called the n value.
00:31
Overall, what we have here is a binomial distribution, which means x follows a binomial, so bin, binomial, where we have np, and n is 10, and the p is 0 .5.
00:50
And to work out the chance of exactly 3, or x is 3 exactly, what we do is use a calculator like the ti -84plus, and the function you want is called binom, for binomial, p, d, f, and that you will find by pressing 2nd, followed by vars, v -a -r -s, on the right by the arrow keys.
01:18
That gives the menu for distributions.
01:21
Go down past number 9 at the bottom, use the arrow keys, until you reach item a, binom, and pdf, press enter.
01:30
It will say trials as the n value, which is 10, p, chance of success, which here is 0 .5, the p value, and the x value is the number you see here, which is 3...