00:01
So, for this problem to begin, for option a that is randomly selected, if we look at the given text, we're told that it is a sample, i'll type this out here, one second here, we're told that it is a sample of randomly selected, randomly selected, 107 candies.
00:30
So we are explicitly told it is randomly selected.
00:34
So we check that off.
00:36
Part b, reasonable to assume that the candies are independent of each other.
00:40
So for that one, for independence, i'd say here there's basically just no reason to think that they aren't independent.
00:55
There's no reason why the color of one candy should affect the color of another candy, unless there is some other thing that we're not being told.
01:03
So it would be reasonable to assume independence.
01:06
And then for part c, well, expected frequency count is at least 5 for every cell.
01:11
So the thing is that the expected frequency for row i, column j is going to be equal to the row total for row i times the column total for column j, divided by the grand total number of observations.
01:24
So, to, or actually, excuse me, that's for the wrong kind of chi -squared test...