A confidence interval for a population mean has a margin of error of

2.5.

a. Determine the length of the confidence interval.

b. If the sample mean is

47.4,

obtain the confidence interval.

c. Construct a graph that illustrates your results.

a. The length of the confidence interval is

enter your response here.

(Type an integer or a decimal. Do not round.)

b. The confidence interval for

is from

enter your response here

to

enter your response here.

(Type integers or decimals. Do not round.)