Question: A random sample has been taken from a normal distri- bution and the following confidence intervals constructed us- ing the same data: (37.53, 49.87) and

A random sample has been taken from a normal distri- bution and the following confidence intervals constructed us- ing the same data: (37.53, 49.87) and (35.59, 51.81)

(a) What is the value of the sample mean?

(b) One of these intervals is a 99% CI and the other is a 95% Cl. Which one is the 95% CI and why?

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