Countryangel707
New member
- Joined
- May 9, 2015
- Messages
- 3
1. A postal worker randomly selected packages that were processed at the staffed counter and packages that were processed at the self-serve station and recorded their weights. The table shows the results.
Counter: n=60, X(bar) = 12.9 lbs , s= 2.6 lbs
Self-serve: n=48, X(bar)= 7.6 lbs , s= 1.41 lbs
I know the answer is: There is a 90% probability that packages processed at the counter weight between 4.7 lb and 5.9 lb more than packages processed at the self serve station . My question is how do you get that answer , thanks. God Bless!
Counter: n=60, X(bar) = 12.9 lbs , s= 2.6 lbs
Self-serve: n=48, X(bar)= 7.6 lbs , s= 1.41 lbs
I know the answer is: There is a 90% probability that packages processed at the counter weight between 4.7 lb and 5.9 lb more than packages processed at the self serve station . My question is how do you get that answer , thanks. God Bless!