We determined the sodium content of 15 boxes of cornflakes 300 grams. The data (in milligrams) were as follows: 128.77, 131.15, 129.65, 132.33, 130.54, 130.72, 131.67, 133.02, 127.98, 130.12, 129.37, 129.91, 130.19, 128.64 and 131.62. There is enough evidence at a significance level of 10%, to conclude that the content average sodium this brand of corn flakes is 130 milligrams?