During times of war or conflict, combatants are often exposed to unsanitary conditions and experience epidemics of diseases such as cholera and typhoid fever. This is an example of what cause of an epidemic?

What is the range of the following data set (45, 61, 22, 13, 54, 37)

A bimodal distribution occurs when 3 or more values occur equally often in a data set

In a normally distributed data set, 99.7% of the data should lie within +/- 3 standard deviations of the mean

Which of the measures of central location is best when data are normally distributed?

A dot plot can be used to show the relationship between a categorical variable on the x-axis and a continuous variable on the y-axis

A frequency distribution provides

Jason measures incubation time of a flu virus in a sample of 157 individuals and finds that the mean date of symptoms appearing (after exposure) is 3 days with a standard deviation of 0.6 days. What is the standard error of this population?

FADH2 electrons enter   and NADH electrons enter in the electron-transport chain  

Camila just started learning to play the piano.  She had her first recital yesterday in front of a large group of people.  It did not go well, even though she knows she could have done better.  One explanation for this poor performance might be , which is the tendency for the presence of other people to have a negative impact on the performance of a difficult task.