4.) everyone in sanjay's class has the same
laptop. after fully charging their laptops, the
class records how many hours each laptop
lasts before it needs the next charge. the
class data was recorded and graphed as
shown at right. the data has a mean of 5.9
hours with a standard deviation of 1.6.
2 3 4 5 6 7 8 9 10
battery life (hours)
a. is a normal distribution an appropriate model for how long a laptop lasts before
needing a charge? explain your reasoning.