00:02
We're going to perform a t -test to see if there's enough evidence to conclude that the actual body temperature is not 98 .6.
00:11
So for our nalth hypothesis, we're going to say the population average is the 98 .6 that everybody believes.
00:20
And then the alternative hypothesis is going to be the population average view does not equal 98 .6.
00:28
And then to help us decide which one of these is true, we need a test statistic and a p -val.
00:33
So for our test statistic, we're going to use this formula here.
00:37
The sample average, which was 98 .2, minus the population average, 98 .6, divided by the sample standard deviation, which is .62 over the square root of our sample size, and the sample size was 106.
00:58
So when we run this calculation, we're going to get a test statistic of negative 6 .6 4.
01:06
Now, that is really a large test statistic...