00:01
We're looking at a binomial question here.
00:03
We're given the sample size, so the number of trials n is 20, and the probability of each of them doing some remodeling in the first five years of home ownership is 35%.
00:17
0 .35.
00:18
So i've immediately taken the parameters for the binomial distribution from the information given.
00:24
Number of trials, probability of success.
00:27
We want the probability, the x, the number who, will remodel their homes is 4 or fewer.
00:36
So less than or equal to 4.
00:38
And it recommends we use the cumulative binomial distribution table.
00:42
So you're going to be looking in the table for these parameters, and just looking for the probability associated with 4.
00:50
Typically, you'll have the probabilities along the top, n along the sides, and then as well subsection of n, you'd have x...