2.b. Compute the sample mean for average hourly earnings (AHE) in 1996 and 2015. (M1.5)

2.c. Compute the sample standard deviation for AHE in 1996 and 2015. (M1.5)

2.d. Construct a 95% confidence interval for the population means of AHE in 1996 and 2015. (M1.6)

2.e. Construct a 95% confidence interval for the change in the population means of AHE between 1996 and 2015. (M1.6)

2.f. Using your calculations from 2.b-2.e, complete the following table:

Table 1. Average Hourly Earnings, Nominal $'s

	Mean	SE(Mean)	95% Confidence Interval
AHE1996
AHE2015
	Difference	SE(Difference)	95% Confidence Interval
AHE2015 - AHE1996

dataset is from: https://www.princeton.edu/~mwatson/Stock-Watson_4E/Stock-Watson-Resources-4e.html

CPS96_15