To compute an interval estimate for the difference between the means of two populations, the t distribution a. can be applied when the populations have equal means b. is not restricted to small sample situations c. is restricted to small sample situations d. none of these alternatives is correct.

The map above shows the expansion of the greek empire. which statement best describes the greeks during the 4th century bc? a. greek expansion was stopped by the persian empire. b. the greek empire controlled parts of africa, europe, and asia. c. the greeks were threatened by barbarian tribes in europe. d. greece did not have friendly relations with ancient egypt.