The website touringplans.com records actual wait times (in minutes) for the Pirates of the Caribbean ride and Splash Mountain ride at Walt Disney World. Do the wait times at these two rides differ?
(a) To answer this question, a random sample of wait times at each ride was obtained. Open the data set 11_3_18a located at www.pearsonhighered.com/sullivanstats. Test whether the wait times at the two rides differ.

(b) A flaw in the analysis from part (a) is that it did not consider the date and time the wait time was measured. Explain how date and time might impact wait times at the two rides.
(c) The data set 11_3_18c located at www.pearsonhighered.com/ sullivanstats represents a random sample of wait times at each ride on the same date and at the same time of day. Explain how this is matched-pairs data.
(d) Test whether the wait times at the two rides differ.
(e) Answer the following for the data in 11_3_18c. Compute the sample mean difference and standard error of the mean difference treating the data as an independent sample. Compute the sample mean difference and standard error of the mean difference treating the data as a dependent sample. What do the results suggest?