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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