Problem

Cheek teeth of extinct primates. Refer to the American Journal of Physical Anthropology (V...

Cheek teeth of extinct primates. Refer to the American Journal of Physical Anthropology (Vol. 142, 2010) study of the dietary habits of extinct mammals, Exercise. Recall that 18 cheek teeth extracted from skulls of an extinct primate species discovered in western Wyoming were analyzed. Each tooth was classified according to degree of wear (unworn, slight, light-moderate, moderate, moderate-heavy, or heavy). The 18 measurements are reproduced in the accompanying table and saved in the CHEEKTEETH file. One tooth is randomly selected from the 18 cheek teeth. What is the probability that the tooth shows a slight or moderate amount of wear?

Data on Degree of Wear
Unknown	Slight
Unknown	Slight
Unknown	Heavy
Moderate	Unworn
Slight	Light-moderate
Unknown	Light-moderate
Moderate-heavy	Moderate
Moderate	Unworn
Slight	Unknown

Cheek teeth of extinct primates. The characteristics of cheek teeth (e.g., molars) can provide anthropologists with information on the dietary habits of extinct mammals. The cheek teeth of an extinct primate species was the subject of research reported in the American Journal of Physical Anthropology (Vol. 142, 2010). These data are saved in the CHEEKTEETH file. A total of 18 cheek teeth extracted from skulls discovered in western Wyoming were analyzed. Each tooth was classified according to degree of wear (unworn, slight, light-moderate, moderate, moderateheavy, or heavy). The 18 measurements are listed here.

Data on Degree of Wear
Unknown	Slight
Unknown	Slight
Unknown	Heavy
Moderate	Unworn
Slight	Light-moderate
Unknown	Light-moderate
Moderate-heavy	Moderate
Moderate	Unworn
Slight	Unknown

a. Identify the variable measured in the study and its type (quantitative or qualitative).
b. Count the number of cheek teeth in each wear category.
c. Calculate the relative frequency for each wear category.
d. Construct a relative frequency bar graph for the data.
e. Construct a Pareto diagram for the data.
f. Identify the degree of wear category that occurred most often in the sample of 18 cheek teeth.

Museum management. Refer to the Museum Management and Curatorship (June 2010) study of the criteria used to evaluate museum performance. Recall that the managers of 30 leading museums of contemporary art were asked to provide the performance measure used most often. A summary of the results is reproduced in the table. One of the 30 museums is selected at random. Find the probability that the museum uses big shows most often as a performance measure.