Answer Happy

Anong ne manufacturar proces a batth of 2.000 mal engres, with mean running life of 19 haurs with andar devaton of 20 houtes Known that this follows a normal distribution was the probability that cogire is in the first 700 ron ng hot What is the probibity that inercines between 900 and running hours What is the probability that an engine is forectly 9 hours? derfywion of the following regresent the grobability distribution function for hours and became the value of Aard Captarsene the probability density function BE B А A