Question 1

Use the following 
A 2012 study investigated the impact of psychological stress on men's judgements of female body size. The men were randomly assigned to one of two groups; one group was assigned to participate in a stressful task while the other group did not take part in the task. Then the men were asked to rate the attractiveness of female bodies varying in size from emaciated to obese.
-Is a control group used in this experiment? If so, which group is the control group?

Accepted Answer

The answer of Use the following 
A 2012 study investigated...

Question 2

Use the following
A tree enthusiast is interested in estimating the typical length of oak tree leaves. He chooses 30 leaves from the oak tree in his backyard.
-What is the sample in this situation?

Accepted Answer

The answer of Use the following
A tree enthusiast is interested...

Question 3

Use the following
A tree enthusiast is interested in estimating the typical length of oak tree leaves. He chooses 30 leaves from the oak tree in his backyard.
-What is the population in which the tree enthusiast is interested?

Accepted Answer

The answer of Use the following
A tree enthusiast is interested...

Question 4

Use the following
A tree enthusiast is interested in estimating the typical length of oak tree leaves. He chooses 30 leaves from the oak tree in his backyard.
-Is this a biased sampling strategy? If so, identify a population that we can generalize to, given our sample.

Accepted Answer

The answer of Use the following
A tree enthusiast is interested...

Question 5

Use the following 
In each situation, indicate whether the method of data collection is biased. If it is, briefly explain why.
-Ask the students at the gym on a Tuesday afternoon how many hours a week they work out to estimate the average amount of time students at the university work out.

Accepted Answer