(16 points) In an analysis of hunting by African lions, biologists filmed prey captures from the safety of their vehicles. The capture of prey was divided into a sequence of events for study, one of which is the stalk, defined as the reduction of predator-prey distance for prey that has been specifically located and the prey is unaware of or minimally alarmed by the predator. The investigators identified two types of stalk: (a) "crouching," - the lion is concealed and either the lion advances toward the prey or the prey advances (unaware) toward the lion, and (b) "running," - the lion is less concealed and advances toward the prey in a rapid manner. Data on lions' stalks of Thomson's and Grant's gazelles from a random sample of 150 kills is summarized in the table below. Characteristic Numeric Value Mean stalking time 31.6 min Standard deviation of stalk time 16.4 min Proportion of stalks of the crouching type 0.92 Researchers believe that the proportion of stalks that are the crouching type is about 0.87. Do the data above provide evidence that the researchers' belief is incorrect and that the proportion of crouching stalks of Thomson's and Grant's gazelles is different from 0.87? Hypotheses: Method: Q: S: T: N: Check: Calculate: Communicate: 7. (18 points) A hotel chain is interested in evaluating reservation processes. Guests can reserve a room by using either a telephone system or an online system that is assessed through the hotel's website. Independent random samples of 80 guests who reserved a room by phone and 60 guests who reserved a room online were selected. Of those who reserved by phone, 57 reported that they were satisfied with the reservation process. Of those who reserved online, 50 reported that they were satisfied. Based on these data, is it reasonable to conclude that the proportion who are satisfied is greater for those who reserve a room online? Test the appropriate hypotheses using a significance level of 0.05.

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