Suppose that the lifetimes of TV tubes are normally distributed with a standard deviation of 1.1 years. Suppose also that exactl
y 20% of the tubes die before 4 years. Find the mean lifetime of TV tubes. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
I would say she should spin the wheel because, if she rolled the dice it would take a long time to get 2 5's on both dice at one time. Hope this helps!
