The president has called Ebola an international crisis and a threat to national security. Why is this disease considered a threat to national security? a.) The disease is killing many people in Africa.
b.) The disease appears and disappears throughout history.
c.) The disease is killing medical workers.
d.) The disease travels across international borders when people travel who have it.

Chris would like to conduct a study on the effectiveness of a new substance-abuse treatment program. he has a sample of participants go through the program and he uses as a comparison group people who did not volunteer for the program but were eligible. chris has used a(n) design for his study.

What is meant by a symmetrical unimodal distribution? a. a distribution is the frequency at which a certain value of a variable is obtained during a study. a symmetric unimodal distribution is a distribution where there is one value with a larger frequency than any other and the pattern of frequencies on the left and right of this larger frequency are mirror images of each other. b. a distribution is a pattern of frequencies for the various values of a variable collected in a study. a symmetric unimodal distribution is a distribution where there is one value with a larger frequency than any other and the pattern of frequencies on the left and right of this larger frequency are mirror images of each other. c. a distribution is the frequency at which a certain value of a variable is obtained during a study. a symmetric unimodal distribution is a distribution where there is a uniform frequency, meaning the frequency of every value is same, and the pattern of frequencies on the left and right of this larger frequency are mirror images of each other.

John redmond was not paid for trim carpentry work that he did for brenda knighton in her home. ms. knighton does not dispute that redmond did the work, but she says that he waited too long to file the suit because the time for suit is measured from the time the work began, which was over 4 years ago, and not from the time she failed to pay, which was two years ago. the statute of limitations in their state is four years. which of the following is a correct statement? the csae must be dismissed because of the statute of limitations the case qualifies for a directed verdict the case can be decided on a summary judgment motion the case can be dismissed on a judgment of the pleadings