Baseball teams in l1 play games with a rule that they believe

Baseball teams in L1 play games with a rule that they believe produces more run and generates more interest among fans.  The data shown below include the average numbers of runs scored per game by League 1 and League 2 teams for the first seven games of the most recent season.  Complete Part A and B

League 1              11.3  10.7  10.2  10.0  9.4  9.0  8.2

League 2              14.0  10.4  9.8    9.5     9.5  9.1  8.2               

A)      With a 95% confidence interval, estimate the mean number of runs scored in League 1 games

B)      With a 95% confidence interval, estimate the mean number of runs scored in League 2 games