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A random sample of 30 receipts for individuals shopping at the Community Drug Store showed the sample mean to be'x = $28. 19 with sample standard deviation s= $4.06.
a. Use Chevyshev's theorem to find the smallest interval centered on the mean in which we can expect at least 75% of the data to fall.
b. Use Chevyshev's theorem to find the smallest interval centered on the mean in which we can expect at least 88.9% of the data to fall.
c. Use Chevyshev's theorem to find the smallest interval centered on the mean in which we can expect at least 93.8% of the data t o fall.
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