A dentist asks a random sample of 75 patients whether they prefer mint, bubblegum, or cinnamon flavor toothpaste. Of these patie
nts, 8 said that they prefer bubblegum. Based on the results of this sample, about how many of the dentist's 1,500 active patients prefer bubblegum flavor toothpaste?
We know that 8/75 patients prefer bubblegum toothpaste. We want to make the ratio, “_:1500”. To do this, we divide 1500 by 75 to get 20. The ratio is now p : 1500. Now, we must do the same thing on both ends: since 75 times 20 got us 1500, 8 times 20 gets us 160. So, 160 out of the dentist’s 1,500 patients prefer bubblegum toothpaste.
Step-by-step explanation:The independent variable is the condition that you change in an experiment. It is the variable you control. It is called independent because its value does not depend on and is not affected by the state of any other variable in the experiment.
