It is free to the buyer because he does not have to pay for the second product, but it is not free to society because the cost to produce the product including the labors, materials, machines, and electricity cost go unpaid.
Answer: (11.95, 14.11)
Explanation:
Let x be a random variable that represent the number of years of education.
Given: Sample size : n= 26
Sample mean : 
Sample standard deviation : s = 3.22
Significance level : 
Degree of freedom: df = n-1 = 25
Critical t-value for
and df = 25 will be

90% confidence interval for mean:

A 90% confidence interval for the mean number of years of education = (11.95, 14.11)
Answer: The Great Lakes.
Explanation: I hope this helps
More slave restrictions occurred due to slaves rebelling against the South.