1. Define "nation-state," and explain the motivational role that ethnicity plays in the development of a nation-state. 2. In September 2014, Scotland's population voted not to separate from the United Kingdom. Why were so many nations
around the world waiting for the results of the Scottish vote?

The difference of sample means of two populations is 55.4, and the standard deviation of the difference of sample means is 28.1. which statement is true if we are testing the null hypothesis at the 95% confidence level? a. the difference of the two means is significant, so the null hypothesis must be rejected. b. the difference of the two means is significant, so the null hypothesis must be accepted. c. the difference of the two means is not significant, so the null hypothesis must be rejected. d. the difference of the two means is not significant, so the null hypothesis must be accepted.