Multiple Choice
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 standard deviation of 1.2 minutes. The width (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
Correct Answer:
Verified
Correct Answer:
Verified
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