Mathematics, 24.04.2020 03:53 courtnicollee

A random sample of 16 ATM transactions at the Last National Bank of Flat Rock revealed a mean transaction time of 2.8 minutes with a sample standard deviation of 1.2 minutes. The margin of error (in minutes) of the 95 percent confidence interval for the true mean transaction time is:

a. 0.639
b.0.588
c. 0.300
d. 2.131

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A random sample of 16 ATM transactions at the Last National Bank of Flat Rock revealed a mean transa...