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A sample of residents is surveyed to determine the number of kilometers travelled per week for...

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.

Math   Statistics-And-Probability   
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