Which statement best describes the results of Exercise 35 ?

i. For observations over all soils, we are 95\% confident that the mean speed is greater when the torque is lower.

ii. For observations over all soils, we are 95\% confident that the mean speed is greater when the torque is greater.

Data From Exercise 35:

Compute the median torque for all observations in all soils. Let \(\mu_{L}\) be the mean speed when the torque is below the median, and let \(\mu_{U}\) be the mean speed when the torque is above the median. Find a \(95 \%\) confidence interval for \(\mu_{U}-\mu_{L}\).