Question: Biology and Environmental Science The tiny zebra and quagga mussels have invaded at least 600 bodies of water in the United States and are causing many problems. These mollusks disrupt the natural food chain, clog pipes, cling to machinery, and foul water-delivery systems.7 A random sample of quagga mussels was obtained from Lake Texoma and Lake Mead, and each was carefully measured. The size of each (in cm) is given on the text website. Is there any evidence to suggest that the population mean size of quagga mussels is larger in Lake Texoma than in Lake Mead? Use a = 0.05, and assume the underlying distributions are normal with equal population variances. Write a Solution Trail for this problem.