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
790.5 794.2 792.2 791.7 794.4 791.6
791.2 790.0 793.0 798.9 789.7 799.2
(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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