The F test of sample variance may be performed if it is not known whether the two populations have equal variance. In this case the hypotheses are ________

Things that people require in order to survive, such as food, are called ________

A) secondary needs B) primary needs C) survival goals D) sufficiency items

In which of the following areas are consistent male-female differences observed?

A) problem-solving ability B) sociability C) work schedule preferences D) competitive drive