Aryan7789 Aryan7789
  • 25-05-2023
  • Mathematics
contestada

a quality control expert at life batteries wants to test their new batteries. the design engineer claims they have a variance of 3844 with a mean life of 997 minutes. if the claim is true, in a sample of 73 batteries, what is the probability that the mean battery life would be greater than 981.7 minutes? round your answer to four decimal places.

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