Use Excel and explain the steps using Excel to find the answer!!!!!!

Part a$.$

A major supermarket chain wants to determine the association between promotion and relative competitiveness. Data were obtained from $15$ states on the promotional expenses relative to a major $100).$

You are assigned the task of telling the manager whether there is any association between relative promotional expense and relative sales.

a$.$ Formulate the null and alternative hypotheses.

b$.$ What is the direction and strength of association between relative promotional expense and relative sales?

c$.$ Plot the relative sales $($y$-$axis$)$ against the relative promotional expense $($x$-$axis$)$ and interpret this diagram.