I am stumped on this problem can someone please explain? A certain type of thermal battery for an airplane?
Posted August 17th, 2009 by admin 1 Comment »
Rebecca J asked:
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.
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.