Question: Data in the Excel file points per game. xlsx show the number of wins eight teams had during a recent NFL season. Also in this

Data in the Excel file points per game. xlsx show the number of wins eight teams had during a recent NFL season. Also in this file are the average points each team scored per game during the season.

a. Construct a 90% confidence interval to estimate the average number of wins for teams that scored an average of 21 points a game.

b. Verify your results with PHStat.

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