Q:Question:A loan officer compares the interest rates for 48-month foed-rate auto loans and 48 -month variable-rate auto loans. Two independent, random samples of auto loan rates are selected. A sample of five 48 -month variable rate auto loans had the following loan rates: 2.305 3.12 x 2.6778 3.18 K 3.168 While a sample of five 48 -month fixed-rate auto loans had loan rates as follows: 4.0265 -3.92 x 4.37 a x 3.66 xA:Answer:a) H0 : ?f - ?V = 0 versus Ha : ?f - ?V ? 0 ------...