0:00
All right.
00:01
So here we're going to state the null and alternative hypotheses for these situations and give a general idea where the critical region is located.
00:11
So here for a the mean snowfall at lake george during the month of february is 21 .8 centimeters.
00:17
So that means the the null hypothesis is where the mean is 21 .8.
00:26
So the that means the alternative hypothesis would be not equal.
00:35
And so that would look like, we'll call it a right here.
00:38
This is a, it's a two -tailed test, meaning it could be on either side, so the rejection region would be like over here on the left, right.
00:50
So b, no more than 20 % of the faculty at the local university contribute to the annual giving fund.
00:57
So no more than 20%, so the null would be mu less than or equal to 20%.
01:04
So that means what you test for is, hey, maybe more than 20.
01:12
A 20 % gave.
01:14
See, on average, children attend schools within 6 .2 kilometers of their homes in suburban st.
01:23
Louis.
01:24
So that means the mue can mean is less than or equal to 62.
01:29
So the alternative would be greater 1 .6 .2.
01:36
B at least 70 % of next year's new cards will be in the compact and subcompact category...