Question 1196306: A manufacturing company pays its workers an average wage of R32,50 an hour, with a standard
deviation of R6,00. If their wages are approximately normally distributed, determine the proportion
of the workers earning wages of between R27,50 and R36,90 an hour.
Answer by ikleyn(52794)   (Show Source):
You can put this solution on YOUR website! .
The normal distribution curve is a bell shaped curve.
The question is to determine the area under the normal distribution curve between the given points.
Go to website
https://onlinestatbook.com/2/calculators/normal_dist.html
and use free of charge online calculator specially intended for this purpose.
Input 32.50 in the port window " Mean ";
input 6 in the port window " SD "; ( <<<---=== SD means "standard deviation" )
input numbers 27.50 and 36.90 in port windows " Between ".
Then click the button " Recalculate ".
You will get the answer in the window " Area (probability) ".
The shaded area in the plot will show you the area of the interest.
Every time as you get similar problem, you can solve it this way.
This way is the easiest and shortest way to learn the subject.
When you learn the subject enough, you will be ready and may start learning other ways.
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