Question 1196306
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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 &nbsp;6 &nbsp;in the port window &nbsp;&nbsp;&nbsp;&nbsp;" SD ";    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;( <<<---===  SD means "standard deviation" )


input numbers &nbsp;27.50 &nbsp;and &nbsp;36.90 &nbsp;in port windows &nbsp;" Between ".


Then click the button &nbsp;" Recalculate ".



You will get the answer in the window &nbsp;" Area &nbsp;(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.