The NFL needs to buy a new batch of official coins for the pre-game coin flip. They get 3 sample coins from a manufacturer based in Sweden, and tell their intern to flip all 3 coins simultaneously multiple times and count the number of heads each time. The intern gets: 0 heads 6 times; 1 head 6 times; 2 heads 7 times; and 3 heads 14 times. Should the NFL buy coins from that manufacturer, i. e., are the coins fair or not