(A) In what situations d we use a t-statistic instead of a Z statistic? What about that situation makes it necessary to use the t-statistic? (B) In that situation, what added benefits do we get if we use a sample size greater than 30? What are the benefits of using a sample size greater than 200? (C) What do the numbers in the vertical (left) margin of a Z table represent? What do the numbers in the horizontal (upper) margin represent? What about the number in the body of the Z table? (D) Now explain the same things about the t table. (E) Why is the construction of the t table so different from that of the Z table, other than to make our lives more complicated? (A) In what situations d we use a t-statistic instead of a Z statistic? What about that situation makes it necessary to use the t-statistic? (B) In that situation, what added benefits do we get if we use a sample size greater than 30? What are the benefits of using a sample size greater than 200? (C) What do the numbers in the vertical (left) margin of a Z table represent? What do the numbers in the horizontal (upper) margin represent? What about the number in the body of the Z table? (D) Now explain the same things about the t table. (E) Why is the construction of the t table so different from that of the Z table, other than to make our lives more complicated