The value of the independent variable is affected by manipulations to the dependent variable

In one research study, the relationship between hours of

sleep and the development of a cold when exposed to viruses was studied. The investigators found that those who got _____ hours of sleep were three times as likely to develop a cold as those who got at least _____ hours of sleep. A) 7; 8 B) 6; 9 C) 9; 8 D) 8; 10

Abrie and Farah are best friends. Abrie has a part-time job at a clothing store and helped Farah by letting her use her staff discount card to buy a prom dress

In turn, Farah promised Abrie that she would help her study for her Biology exam. They are offering each other _______________ support. a. informational b. instrumental c. companionship d. esteem