Suppose the heights of kindergarten children can be described by a normal model with a mean of 38.2 inches and standard deviation of 1.8 inches.
1. what fraction of kindergarten kids can we expect to be less than 3 feet tall?
Thank you for the opportunity to help you with your question!
3ft = 36in
Z= 36-38.2/1.8 = -1.22
If the z=-1.22 how did you get to 0.112?
And how would I determine what fraction of kindergartners are taller than 42 in?
I see the answer but don't know how to get there.
normal cdf (-99, -1.222) = 0.1109
about 11.09% of kinder-kids should be less than 3 feet tall
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