Hypothesis test on number of votes accidentially given to Buchanan

Hey :wave:

I have the following task:
Estimate the number of votes, denoted v, in Palm Beach that are
accidentially given to Buchanan by including a dummy variable for
this county in the regression model of Part 1. Test the hypothesis
that v < 975 against the alternative that v  975. Motivate why this
hypothesis is important and discuss the results.

Part 1 is to run a gregression of the number of votes on Buchana on a sonstant and the votes on Gore.

Should i just make a regression on:

The problems is then what vaule should I use for b in the t-test?

Hope you can give me some kind of help :)

The data for the task is attached in a zip-file-