Question

An expensive watch is powered by a​ 3-volt lithium battery expected to last four years. Suppose...

An expensive watch is powered by a​ 3-volt lithium battery expected to last

four years. Suppose the life of the battery has a standard deviation of 0.7 year and is normally distributed.

a. Determine the probability that the​ watch's battery will last longer than 4.8 years.

b. Calculate the probability that the​ watch's battery will last more than 3.45 years.

c. Compute the​ length-of-life value for which 55​% of the​ watch's batteries last longer.

Round to 4 decimal places as needed

Homework Answers

Answer #1

3.9120 years

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