Question

A sample of residents is surveyed to determine the number of kilometers travelled per week for reasons not related to work. A year later, following a large increase in gasoline prices, the same individuals are surveyed a second time to monitor changes in their discretionary travel behaviour. Use a parametric test for this analysis.

Individual	km’s (before)	km’s (after)
1	102	104
2	98	90
3	225	200
4	119	75
5	77	80
6	131	94
7	115	129
8	105	84
9	180	144
10	132

Is there evidence for the impact of rising gasoline prices on the amount of discretionary travel? Be sure to use the six formal steps of hypothesis testing and use an α-value of 0.01.

Answer 1