That would be 128+32=160-96=64?
The answer is 68 because if it rose between the times it would mean you minus 7 from 75
the answer to your question is:
D (2, -6)
i hope this was helpful ;)
So the following is the answer of the following question in your problem and please do not post to many question in just one posting.
#1 The 98% confidence interval for the mean hours is between 6 and 50.
#2 The smallest margin of error between the two is southern florida with 1.8% margin of error.