The following data represent the muzzle velocity (in feet per second) of shells fired from a 155-mm gun. For each shell, two measurements of the velocity were recorded using two different measuring devices, resulting in the following data.
Observation 1 2 3 4 5 6
793.8 792.5 793.1 793.8 790.8 790.3
802.5 799.8 802.5 796.2 791.9 787.1
(a) Construct a 99% confidence interval about the population mean difference. Compute the difference as device A minus device B. Interpret your results.
The confidence interval is (_, _)
(Round to three decimal places as needed.)
Choose the statement that best agrees with your interpretion of your results.
A) I am _% confident that the mean difference in measurement lies in the interval found above.
B) I am _% confident that the mean difference in measurement lies in the interval found above.
C) I am _% confident that the mean difference in measurement is 0.
D) I am _% confident that the mean difference in measurement is 0.01
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