Measurements were made of arsenic concentrations in fish found in Northern Canada. In a sample of 8 whitefish caught in Yellowknife Bay, the mean arsenic concentration in the liver was \(0.32 \mathrm{mg} / \mathrm{kg}\), with a standard deviation of \(0.05 \mathrm{mg} / \mathrm{kg}\). Can you conclude that the mean arsenic concentration in whitefish in Yellowknife Bay is greater than \(0.3 \mathrm{mg} / \mathrm{kg}\) ?