An educator wishes to study the effects of sleep deprivation on the ability to concentrate. He decides to study the students in a calculus class. Before the start of the class, each student is asked about the number of hours slept the previous night. Each student's eye movement is then tracked throughout the lecture. The amount of time is recorded whenever the student is not focused on either the instructor or taking notes. This is an example of: O a randomized experiment. O a sample survey. O a matched pairs study. O an observational study.

This essay will discuss two speeches perils of indifference by elie wiesel, and on women is right to vote by susan b. anthony. the difference between elie wiesel's speech and susan b. anthony's is lack of equal right where as elie wiesel's is about wwii. the similarities between these two speeches and events are indifference or lack of concern, in both cases these events happened due to lack of concern for both parties. the nation had a lack of concern for those fighting for their lives in europe for many years, as did men about women's right to vote, many did not seem to care that women's rights were not being exercised

Describe how gravity and convection work together to move the plates in the plate tectonics theory

Which common characteristic of renaissance buildings does this image show