Question

researchers are interested in whether cutting out desserts at night will help with insomnia. in addition, they wonder if exercise will have an impact. they decide to conduct an experiment on volunteers who suffered from insomnia. the subjects were either given desserts or not given dessert, and also either put on an exercise program or told not to exercise. how many factors does this experiment have? if every possible combination of the variable values was used, how many treatments were there? enter an integer or decimal number more

Explanation:

Step1: Identify the factors

The factors are dessert - having dessert or not, and exercise - doing an exercise program or not. So there are 2 factors.

Step2: Calculate the number of treatments

The number of treatments is found by multiplying the number of levels of each factor. Each factor has 2 levels. So the number of treatments is $2\times2=4$.

Answer:

4