Question 1186951
.


Go to online  (free of charge)  normal distribution probability calculator 
https://onlinestatbook.com/2/calculators/normal_dist.html



Input the given parameters of each part into the appropriate window of the calculator and get the answers

to your questions a), b), c) and d).



The calculator has perfect description and design,  so  EVERY  person,  even beginner,  may work with it on his or her own,

even having minimum knowledge on the subject.



////////////////////



Or, alternatively, you may use your  GRAPHING  CALCULATOR. 
See  THIS  Internet source / site



https://mathbits.com/MathBits/TISection/Statistics2/normaldistribution.htm



Find there  EVERYTHING  you need to know in clear and compact form

to solve this problem  (and thousand other)  similar and different problems  ON  YOUR  OWN.



Happy calculations  ( ! )