Suppose that your wireless mouse has a single battery and

Reference no: EM13608468

Suppose that your wireless mouse has a single battery and that you buy batteries that have a mean lifetime of 6 weeks with a standard deviation of 1.5 weeks. As each battery dies, it is replaced with a new one. Assume that the lifetime of each battery is independent of all others.

(a) Estimate the probability that 14 batteries will last longer than 2 years.

(b) How many batteries should one have on hand in order to be 97.5% condent that new batteries will not need to be purchased within 2 years?

Reference no: EM13608468

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