researchers counted the number of breeding turtles on various sections of beach property in Cancun every year. 9 randomly selected sections of beach were used for 2 sucessive years.

Section Section Section ......

A B C ......

2015 62 54 36 .......

2016 60 58 31 ........

Assume 5% significance level is the # of turtles in 2015 different from the # of turtles in 2016. assume normal distribution. use critical value approach.

My question: what formula do i use here and how do i start?