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CNNBC recently reported that the mean annual cost of auto insurance is 1024 dollars. Assume the standard deviation is 230 dollars, and the cost is

CNNBC recently reported that the mean annual cost of auto insurance is 1024 dollars. Assume the standard deviation is 230 dollars, and the cost is normally distributed. You take a simple random sample of 40 auto insurance policies. Round your answers to 4 decimal places.

  • a simple random sample of 40 auto insurance policies, find the probability that the average cost is less than $984.

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