For each probability and percentile problem, draw the
picture.
Suppose that the useful life of a particular car battery, measured
in months, decays with parameter 0.02. We are interested in the
life of the battery.
PART F
Find the probability that a car battery lasts more than 32
months. (Round your answer to four decimal places.)
Part (g)
80% of the batteries last at least how long? (Round your answer
to two decimal places.)
months
f) The probability that a car battery lasts loner than 32 months is computed here as:
Therefore 0.5273 is the required probability here.
This is shown in the graph here as:
g) Let 80% of the batteries last at least M months. Then, we have here:
This is shown in the plot as:
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