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Mathematics, 28.08.2020 14:01 Esteffyy
A random sample of 20 purchases showed the sample mean of $48.77 and the sample standard deviation s is $17.58. How large is the margin of error for a 80 % confidence interval for the mean purchases of all customers
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A random sample of 20 purchases showed the sample mean of $48.77 and the sample standard deviation s...
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