0:00
Hello.
00:03
So in this question we've been given a mean to be, which is the temperature, to be going to 9 .1 fahrenheit, sorry.
00:16
We've got a standard deviation of 3 .7, we've got k to be 3.
00:23
So using shabby shaves rule as shabby shaves.
00:40
Shabby shaves rule is going to be having 1 minus 1 over 3 squared times 100.
00:53
That's going to be 1 minus 1 over 3 squared times 100.
01:05
So this is going to give you a, let's see, it's going to give you a, what? this 100 % so this will give you 89 not 89 that's so 88 % percent okay so we can say this approximately 89 so what does this mean this means that a 89 % of the data lies between negative 3 x minus mu over standard deviation x minus 79 .1 over standard deviation 3 .7.
02:30
Alright? so we can, from these two, let's see, from this side and that side, you can calculate the value of x.
02:41
As you can see, negative 3 can be equal to x minus 79 .1 divided by 3 .7.
02:55
So you can find x from this...