MAKE A DECISION: USEFUL LIFE A storage battery has an expected lifetime of 4.5 years
Chapter 9, Problem 52(choose chapter or problem)
MAKE A DECISION: USEFUL LIFE A storage battery has an expected lifetime of 4.5 years with a standard deviation of 0.5 year. Assume that the useful lives of these batteries are normally distributed. (a) Use a computer or graphing utility and Simpsons Rule (with ) to approximate the probability that a given battery will last for 4 to 5 years. (b) Will 10% of the batteries last less than 3 years?
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