# 1. What is the interpretation of β_1? 


# In terms of the parameters, 
# state the null hypothesis that a 1% increase in A’s expenditures 
# is offset by a 1% increase in B’s expenditures.

# c)	Estimate the given model using the data in VOTE1.gdt
#  and report the results in usual form. Do A’s expenditures affect the outcome?
#  What about B’s expenditures?

ols voteA 0 lexpendA lexpendB prtystrA

# d)Estimate a model that directly gives the t statistic 
# for testing the hypothesis in part (ii). 
# What do you conclude? (Use a two-sided alternative.)
genr lexpendAB = lexpendA + lexpendB
ols voteA 0 lexpendAB prtystrA