Please help!!

at. A lot of my research is concerned with gases in aquatic systems. |EJIne of my students wanted to know if the concentration of the gas He was different in the open ocean or in the coastal ocean. She went on a research cruise and collected 5 samples in the surface water of the open ocean off the coast of Cape Cod. The life concentration of those samples was: 3.3356x1' [1M aaaozno' pM 3.33 156nm pM 335E~x1=4 uM 3.3352x1\" pM On the same day, she also collected samples forxe in the ooastal ocean, right near where the boat docked. She found when she measured those T ooastal samples, she had a mean Xe concentration of 3.369211' pM with a standard deviation of litlfllJ'i uM. all What is the mean and standard deviation of the open ocean data set? b} Using appropriate statistical methods discussed in class, what is the greatest percent confidence at which she could say; the concentration in her coastal ocean samples are signicantly,f different than the lite concentration in her open ocean samples? Assume 1glou can use the homoschedastic t-test. cl What could the student do if she needed to know the concentration in the coastal ocean more precisely [i.e. how could she reduce her measurement uncertainty]