A cell phone company is trying to find a waterproof cell phone case to add to its product line. Company managers know that plastic and silicone will be used. They also know that the depth of the water—less than five feet, between five feet and 20 feet, and more than 20 feet—affects the waterproof case. An experiment will compare all combinations of these choices. The cell phones will be subjected to each treatment, with one group dropped in water without a case, and all phones will be scored for quality. What is the control?

a. Cell phones in the plastic case
b. Cell phones in the silicone case
c. Cell phones in the plastic case dropped in water less than five feet deep
d. Cell phones in the silicone case dropped in water more than 20 feet deep
e. Cell phones with no case

this is because this is the option that neither the subject nor the group is tested for the dependent variable which is what helps you find a conclusion.

Answer Link

shivishivangi1679 shivishivangi1679 · Answer 2 · 2022-07-21T07:32:19+02:00

The cell phones will be subjected to each treatment. The correct option is E that is cell phones with no case.

What are independent and dependent variables?

Even though everything can be almost always related to its reason, when we talk about two related things, there might happen that one of those things is dependent on other.

If a variable is taking its values independently of any visible direct cause, then that variable is called independent variable.

The variables who take their values based on some other variables' values are called dependent variables.

Since neither the subject nor the group is tested for the dependent variable which is helps to find a conclusion.

Thus, option E is correct that is e. Cell phones with no case.

Learn more about dependent variables. ;

https://brainly.com/question/1479694

#SPJ2