00:01
The size of fish is very important to commercial fishing.
00:03
A study conducted in 2012 on the length of atlantic cod, cotton nets, and karshkrona have a mean of 49 .9 centimeters and a standard deviation of 3 .74 centimeters.
00:20
Assume the length of fish is normally distributed and a sample of 17 fish is taken.
00:27
So we're jumping down to d.
00:29
Find the mean of the sampling distribution of the sample mean.
00:33
So the sample mean is going to be the same as our mu.
00:36
It's going to be 49 .9.
00:41
The correct units in the second box, i don't know if they mean that they want you to have centimeters in that second box.
00:48
For e, i can't see the box.
00:52
Find the standard deviation of the sampling distribution of the sample mean.
00:55
So sometimes we call this the standard error.
00:59
And we get that by taking 3 .74 standard deviation and dividing by the square root of the sample size.
01:05
So that would be 0 .91...