An automobile battery manufacturer company named Everlast conducted a test which indicates the lifetime of the Everlast automobile battery is normally distributed with a population mean= 60 months and a population standard deviation = 6 months. The Everlast manufacturer company has decided to offer a free replacement battery to any purchaser whose Everlast battery does not last at least as long as the minimum lifetime specified in its guarantee. c. If an automobile battery manufactured by this company is randomly selected then what is the probability that it will last greater than 72 months? d. If an automobile battery manufactured by this company is randomly selected then what is the probability that it will last exactly 40 months?

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.