Posted October 24th, 2009
by admin
Daisy asked: 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.
Tags: Airplane, Normal Distribution, Standard Deviation
Posted in Mathematics | 1 Comment »
Posted August 17th, 2009
by admin
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.
Tags: Normal Distribution, Power Device, Thermal Battery
Posted in Mathematics | 1 Comment »
Posted May 18th, 2009
by admin
Katie asked:
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.
Tags: Normal Distribution, Proportion, Standard Deviation
Posted in Mathematics | 1 Comment »
