SOLUTION: The time required by a nurse to inject a shot of penicillin has been observed to normally distributed with mean of 30 and standard deviation of 10 seconds find the proportion betwe
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Question 1158009: The time required by a nurse to inject a shot of penicillin has been observed to normally distributed with mean of 30 and standard deviation of 10 seconds find the proportion between 25 and 35 Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! z=(x-mean)sd
z=(25-30)/10=-0.5
and z=+0.5
the probability of z between -0.5 and +0.5 is 0.3829
