What proportion of these batteries can be expected to have lives of 322 hours or less? Assume a normal d?
Posted October 24th, 2009 by admin 1 Comment »
Daisy asked:
Battery Power Problem. A certain type of thermal battery
Battery Power Problem. A certain type of thermal battery
for an airplane navigation device backup power has a
mean life of 300 hours with a standard deviation of 15
hours. What proportion of these batteries can be
expected to have lives of 322 hours or less? Assume a normal
distribution of backup power device lives.