1.     A researcher is interested in knowing if there is a relationship between the years presented in the table below and the average number of people in a family receiving welfare benefits.

Using the data in the above table, provide the following information:

a. state the null and alternative hypothesis.

i. H₀:

ii. H_a:

_{b. What is the value of the correlation coefficient r:}

_{c. What is the value of the coefficient of determination r^2:}