We use a z rather than a t test when: A) The population mean is known
B)The population standard deviation is known
C) Neither the population mean or standard deviation are known

How does federalist, no.10 address the concerns of a strong national government in brutus i? a) the court system would be a representative democracy and the other branches republics. b) representative gov't was the only way to check state power in the national gov't. c) states would be allowed to choose which sort of representation they have at the national level d) the national gov't would be a balance between democracy and republic, thus protecting the rights of citizens.

Compare and contrast the impact of global commerce on european and asian dynasties. did any dynasty hold an advantage over others in controlling commercial networks and using them to enrich their societies?

Which of the following would most likely be a preservationist, as opposed to a conservationist, approach to public land management? i. allowing unrestricted boat access to a lake ii. allowing atv use in all areas of public land iii. closing fragile sections of a park to tourists i only ii only iii only i and iii ii and iii