Read and understand the following statements.Determine which of these are null hypothesis and which are alternative hypothesis; and whether it is a one tail or two tail hypothesis.Discuss your basis for saying it is a null or alternative hypothesis and one or two-tail hypothesis.

1.Aggressive marketing leads to higher revenues.

2.Leadership styles of male and female managers are the same.

3.Customer satisfaction has influence on customer engagement of ABC Spa clinic

4.Academic performance of senior high school students is independent of their personality and intelligence level.