An experiment is designed to compare the average salaries of employees in a particular position in two competing companies. The null hypothesis is assumed to be that there is no difference in the average salaries of employees in a particular position in the two companies. What is the alternative hypothesis?
A. There is a difference in the average salaries that is equal to the standard deviation.
B. There is no difference in the average salaries.
C. There is a difference in the average salaries.
D. The average salaries are equal.