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An automobile battery manufacturer claims their batteries have an average life of 5.2 years with a standard deviation of 0.6 years. Assuming battery life is

An automobile battery manufacturer claims their batteries have an average life of 5.2 years with a standard deviation of 0.6 years.

Assuming battery life is normally distributed, the probability a random sample of 16 batteries has an average life greater than 5.5 years is

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