In Example 9.6.3, we discussed Roman pottery found at two different locations in Great Britain. There were samples found at other locations as well. One other location, Island Thorns, had five samples X1, . . . ,Xn with an average aluminum oxide percentage of = 18.18 with = 12.61. Let Y1, . . . , Y5 be the five sample measurements from Ashley Rails in Example 9.6.3. Test the null hypothesis that the mean aluminum oxide percentages at Ashely Rails and Island Thorns are the same versus the alternative that they are different at level α0 = 0.05.