Answer:
There was no error
Step-by-step explanation:
There are two types of statistical errors, the type 1 error and the type 2 error. In this case we refute the null hypothesis when the hypothesis is, in fact, false, because the mean process is 9 days instead of 7. Therefore we made no errors.
If the null hypothesis were True, a type 1 error would have ocurred. If the null hypothesis were false and we didnt refute it, then a type 2 error would have ocurred.
This length is 1/25 (0.04) meters.
Answer:
123.46 or 42.28
Step-by-step explanation:
Assuming that b is the leg side of a triangle and that c is the hypotenuse, we can solve for c using SOHCAHTOA.
We can find the angle from the equation sin X = 0.3240.
X =
0.3240
X = ...
Through SOHCAHTOA, we know that we should use either sin X =
or that cos X =
.
I'm going to assume that we use sin X =
since we are given a length b and not a length a. So:
sin 18.9050 = 
c =
= 123.46
If we use cos X =
, then:
cos 18.9050 = 
c =
= 42.28
Not sure which one is correct since we are not given a picture of the sides.
The total tip is 2.7$ because, 18 percent of 15 is 2.7.