B. The average fee collection had a mean of $126 and SD of $15. Since conditions have been met, construct a one-sample t-interval with 44-1 = 43 degree of freedom at 90% confidence. We used: t*45= 1.679 , t*43=126+/- 3.8 126 +/- t*43(15/V44) = (122.2,129)