2.38 Cheek teeth of extinct primates. Refer to the American D Journal of Physical Anthropology (Vol. 142, 2010) study MOLARS of the characteristics of cheek teeth (e.g., molars) in an extinct primate species, Exercise 2.9 (p. 38). In addition to degree of wear, the researchers recorded the dentary depth of molars (in millimeters) for 18 cheek teeth ex- tracted from skulls. These depth measurements are listed in the accompanying table. Summarize the data graphically with a stem-and-leaf display. Is there a particular molar depth that occurs more frequently in the sample? Data on Dentary Depth (mm) of Molars 18.12 16.55 19.48 15.70 19.36 17.83 15.94 13.25 15.83 16.12 19.70 18.13 15.76 14.02 17.00 14.04 13.96 16.20 Based on Boyer, D. M., Evans, A. R., and Jernvall, J. "Evidence of dietary differentiation among late Paleocene-early Eocene Plesiadapids (Mammalia, primates)." American Journal of Physical Anthropology, Vol. 142, 2010 (Table A3).

The bus is late or my watch is fast.

After running a mile a day over a period of two weeks, the average amount of weight loss is 2.5 pounds. A dietitian, who publishes health articles in a newspaper, states their new diet program helps with additional weight loss when combining their special diet with running a mile a day over a period of two weeks. Interested in studying the dietitian's article further, you ask friends who have tried the dietitian's new program and you determine their weight loss to be 3.0 pounds in a two-week period, on average. As you set up a hypothesis test to determine if the dietitian's article is correct, what is the dietitian's claim?

Donna wants to give her child some cough medicine. However, she is unsure about the dosage, so she reads the directions. She notices that the dosage differs based on age. Determine the independent variable and the dependent variable.