Question

For each probability and percentile problem, draw the picture. Suppose that the useful life of a...

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

Homework Answers

Answer #1

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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