Question
The lifetime of a certain electrical part is a random variable with mean 100 hours and standard deviation 20 hours. If 16 such parts are
The lifetime of a certain electrical part is a random variable with mean 100 hours and standard deviation 20 hours. If 16 such parts are tested, find the probability that the sample mean is
a.less than 104;
b.between 98 and 104 hours.
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A Handbook Of Statistical Analyses Using Sas
Authors: Geoff Der, Brian S Everitt
3rd Edition
1584887850, 9781584887850
