A local gem-hunting group has asked you to design a research study for them. They are trying to find gold deposits, which in that area are often found with high concentrations of quartz. How could you test if quartz concentration can be used to detect gold? Question 46 options: Collect samples of gold (mg) and quartz (g) from the area they want to go gold hunting. Use a t-test to compare the gold and the quartz measurements. Collect several samples from the area and then measure gold (mg) concentration and quartz (g) concentration. Use a linear regression to see if quartz can predict gold. Measure concentrations of quartz (g) and gold (mg) in samples from the area. Then use a logistic regression to see if gold can predict quartz concentrations. Collect rock samples from the area and look to see if there is gold (yes/no) and if there is quartz (yes/no). Use a chi square test of independence to see if there is a relationship