Actually in this case we will make use of the z test
statistic. In which we calculate for the z score and then use the standard
normal distribution tables to find for the P value at the calculate z score.
z = (x – u) / s
z = (97 – 98) / 2
z = -0.5
The z value should be greater than 1.65 to for the null
hypothesis to be accepted. Hence rejected.
If you do rise over run, then you will realize there is 5 block for 0.5 block on the line. It makes more sense if you take the line and make a triangle with the hypotenuse as the line. You will find that the width and length are not equal. If you do rise over run, you get 5/0.5 for both.
