17. A researcher wishes to determine whether the rate of water flow (in liters per second) over an experimental soil bed can be used to predict the amount of soil washed away (in kilograms). The...

Can you please help me on questions 17 through 19? Thank you!

Extracted text: 17. A researcher wishes to determine whether the rate of water flow (in liters per second) over an experimental soil bed can be used to predict the amount of soil washed away (in kilograms). The researcher measures the amount of soil washed away for various flow rates, and from these data calculates the least-squares regression line to be Amount of eroded soil = 0.4 + 1.3 x (flow rate) What do we know about the correlation between amount of eroded soil and flow rate? Or= 1/1.3 Or= 0.4 O It would be positive, but we cannot determine the exact value. O It would either be positive or negative. It is impossible to say anything about the correlation from the information given. 18. A group of college students believes that herbal tea has remarkable powers. To test this belief, they make weekly visits to a local nursing home, where they visit with the residents and serve them herbal tea. The nursing-home staff reports that after several months many of the residents are healthier and more cheerful. We should commend the students for their good deeds but doubt that herbal tea helped the residents. Identify the response variable in this informal study. eBook O Nursing home residents O Group of college students O Health / Cheerfulness O Consumption of herbal tea 19. A study shows that there is a positive correlation between the size of a hospital (measured by its number of beds x) and the median number of days y that patients remain in the hospital. Use a diagram to determine whether the following statement is True or False: This study means that you can shorten a hospital stay by choosing a small hospital. eBook O True O False Submit 10:47 PM Remaining: 1:04:00 Start: 10:41 PM E ENG 2/16/2021 (16) P Type here to search Del PgUp F11 PgDn F12 End PrtScn FB Home F9 Ins F10 DII F7 F6 FS Esc F3 F4 F2 & Backspac 23 24 % @ 5 6 7 8 9 2 4. W E R Y Tab F G H K