Design a correlation-based study or a quasi-experiment to test each of the following:

a. Hot weather is associated with higher rates of violence in the streets.

b. Rap music causes people to become more sexist (rather than the other way around).

c. Childhood schizophrenia can be pre- dicted from cognitive deficits, genetic predisposition, and autonomic arousal in childhood.

d. Older people exercise less than middle- aged people.

e. A college education increases people's SAT scores.