The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took these 100 customer
1 answer:
You might be interested in
Assuming 2x2 is 
you would get 2(2.5)(2.5) - 3(2.5) +7, which is 2(6.25) - 7.5 + 7, 12.5 - 0.5, [12]