### Probability that simple random sample automobile insurance

Assignment Help Basic Statistics
##### Reference no: EM13103593

The mean annual cost of automobile insurance is \$939. Assume that the standard deviation a= \$245.

a) What is the probability that a simple random sample of automobile insurance policies will have a sample mean within \$25 of the population mean the for each of the following sample sizes: 30, 50, 100, 400?

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