An ability to talk easily to people might be associated with a career in which cluster? A. Information sciences
B. Marketing, sales and service
C. Manufacturing
D. Agriculture, food and natural resources

Apopulation of bolts has a mean thickness of 20 millimeters, with a population standard deviation of .01 millimeters. give, in millimeters, a minimum and a maximum thickness that includes 68% of the population of bolts.