How would I construct a 99% confidence interval about the population mean difference

when computing the difference as device A minus device B if 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

A 794.1 791.8 790.5 794.9 793.7 793.5

B 798.3 791.9 798.1 796.5 799.1 798.0

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- How would I then compute the difference as device A minus device B.
- dam82ndab
- Aug 05, 2018 at 8:49am

- Thanks for write the difference is in the interval (-7.899, 0.099) as the interval contains the zero, the means of the two devices are equal. its difference is 0
- oflores31
- Aug 05, 2018 at 8:57am