Question 233782
If you are constructing a 95% confidence interval using the information: n = 50, = 65.4, s = 2.1 and E = 0.65. What is the middle value of the interval? 
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The middle value is the sample mean,  Your data left out the
symbol but I think you meant to list 65.4 as the sample mean.
Cheers,
Stan H.