+0  
 
0
60
1
avatar+236 

thx for answer

 Mar 7, 2021
 #1
avatar+31281 
+1

If I understand the syntax of your question correctly 

    P ( 56<= x <60 )       56 is one standard deviation below the mean     z - score = .1587

                                      60 is the mean so  z = .5000

                                             the area between     .5000 - .1587 = .3413         Not positive of this answer  cheeky

 Mar 7, 2021

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