Mary beth is running an experiment and wants to make sure she has randomly assigned her 40 participants to the two conditions. which of the following methods of forming groups would give her random assignment? 1. assign the first 20 to show up to the first group and the second 20 to the second group. 2. post two sign-up sheets: 9 a. m. for the first group and 2 p. m. for the second group. 3. participants with names in the first half of the alphabet are in the first group; the second half of the alphabet are in the second group. 4. flip a coin as each participant arrives: heads indicates assignment to the first group, tails indicates assignment to the second group.

Reformation, calvinism, the colonization of the americas and the changes in political power (from nobility to bourgeoisie) during the late 1500s and 1600s. how did these events contribute to the rise of the modern-nation state and capitalism?

Which of these was not a key difference between northern and southern states at the constitutional convention? wanting to protect states’ interests vs. a government with strict rules having more, larger cities vs. having fewer, smaller cities wanting to protect agriculture vs. protect industries having many enslaved people vs. using less enslaved labor

In 1914, alabama produced 1.7 million bales of cotton, but three years later produced only 515,000, bales. meanwhile, in georgia, 5.2 million acres of land was dedicated for cotton production in 1914, but by 1923 there were just 2.6 million acres used for growing cotton. all of this was the result of the work of a tiny insect: the boll weevil. alabama and georgia first felt the effects of the boll weevil at different times. what would account for this difference in timing? a) the infestation moved from west to east. b) the infestation moved from east to west. c) georgia had better ways to deal with the problem. d) alabama was further from the insect's point of origin.