A study was conducted by the department of zoology at the Virginia tech to estimate the difference in the amount of the chemical orthophosphorus measured at two different stations on the James river. Orthophosphorus was measured in milligrams per liter. fifteen specimen were collected from station 1, and 12 specimens were obtained from station 2. the 15 specimens from station 1 had an average orthophosphorus content of 3.84 milligrams per liter and a standard deviation of 3.07 milligrams per liter, while the 12 specimens from station 2 had an average content of 1.49 milligrams per liter and a standard deviation of 0.8 milligrams per liter. Assume the observations came from normally distributed populations with different variances. Set up the hypothesis if the researcher suspects the average orthophosphorus contents are different at the two stations.

QUESTION 4 A study was conducted by the Department of Zoology at the Virg measured at two different stations on the James River. Orthoph station 1, and 12 specimens were obtained from station 2. The 1 milligrams per liter and a standard deviation of 3.07 milligrams milligrams per liter and a standard deviation of 0.8 milligram per different variances. Set up the hypotheses if the researcher susp O Ho:H1 - H2 SO VS Ha: H1 -H2>0 OHo:H1 -H2ZO VS Ha: H1-H2