Question

A new coprophagia deterrence medication has been developed by scientists. On average coprophagic dogs consume 8 ounces of stool in a day (SD = 1). After one week of the new treatment, 12 dogs who were treated consumed 5 ounces of stool per day.

a) What is the IV?

b) What is the DV?

c) What is the research question?

d) What is the Null Hypothesis in symbols and in words?

e) What is the Research Hypothesis in symbols and in words?

f) Is this a directional or a non-directional hypothesis?

g) Compute the z-score for the sample’s mean.

h) What is the critical z-score for rejecting the Null hypothesis?

i) Do you reject or fail to reject the Null hypothesis?

j) What would be your conclusion about the new production methods given your results?

Answer 1

Answer a) in the study the introduction of the new coprophagia deterrence medication is the independent variable ( IV) as it the variable which was manipulated by the researchers to establish its effectiveness as the new treatment for dogs.

b) the consumption of stool per day by the dogs was the dependent variable ( DV) as it was being studied as the affected response.

c) the research question in the study is to determine whether the new deterrence medication is effective in reducing the per day consumption of stool in coprophagic dogs.

d) the study can have the given null hypothesis: ‘ there is no significant difference in the average consumption of stools by the cpprophagic dogs who received the new treatment and the control group dogs.

In symbols, this indicates H0: μ = 8 where μ is the population mean and H0 is the null hypothesis.

This means that there will be no significant difference between the two groups.