posted by Nathan .
The batteries from a certain manufacturer have a mean lifetime of
hours, with a standard deviation of
hours. Assuming that the lifetimes are normally distributed, complete the following statements.
Math (?) -
What statements? You cannot copy and paste here.
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to your Z scores.