Question

scenario

1. a cow is given a growth hormone and then compared to another cow that was not given a growth hormone. both cows were weighed at 2 years.
2. mosquito repellent is sprayed on one arm and the other arm is not sprayed. the number of mosquito bites is counted after 2 hours.

independent
a) growth hormone
b) weight of cow
c) cows
a) mosquito bites
b) repellent
c) 2 hours
dependent
a) growth hormone
b) weight of cow
c) cows
a) mosquito bites
b) repellent
c) 2 hours

Explanation:

1. In the cow - growth hormone scenario, the growth hormone is what is being manipulated (given or not given), so it is the independent variable. The weight of the cow is what is being measured and is affected by the growth hormone, so it is the dependent variable.
2. In the mosquito - repellent scenario, the mosquito repellent (sprayed or not sprayed) is the independent variable as it is the factor being changed. The number of mosquito bites is what is being measured and is influenced by the repellent, so it is the dependent variable.

Answer:

1. Independent: a) growth hormone; Dependent: b) weight of cow
2. Independent: b) repellent; Dependent: a) mosquito bites