Data on Degree of Wear Unknown Light-moderate Unknown Heavy Slight Light-moderate Moderate Unknown Slight Moderate Light-moderate Unworn Moderate-heavy Unknown Light-moderate Unworn Unknown UnknownEighteen cheek teeth extracted from skulls from an extinct primate species 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. 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? Click the icon to view the data on degree of wear. The probability that the tooth shows a slight or moderate amount of wear is. (Round to three decimal places as needed.)