A new cream was developed to reduce the irritation caused by poison ivy.To test the effectivoness. researchers placed an ad online asking for volunteers to participate in the study. One hundred subjects replied and were informed that one group would receive the new cream and the other would receive a cream with no active ingredient. All 100 subjects were exposed to poison ivy.Fifty were then randomly assigned to the group with the new cream.and 50 were randomly assigned to the group with the cream with no active ingredient After three days, the subjects' level of irritation was measured. Which of the following statements is true about the benefits of random assignment? The variability botween each subject may not be evenly distributed between the two groups, so any observed differences in the lovel of irritation between the two groups would not be due to the new cream The variability between each subject would be evenly distributed between the two groups, so any observed differences in the lovel of irritation between the two groups are more likely due to the new cream. The variability between each type of cream would be evenly distributed between the two groups, so any observed differences in the level of imtation between the two groups are guaranteed to be due

Question

A new cream was developed to reduce the irritation caused by poison ivy.To test the effectivoness. researchers placed an ad online asking for volunteers to participate in the study. One hundred subjects replied and were informed that one group would receive the new cream and the other would receive a cream with no active ingredient. All 100 subjects were exposed to poison ivy.Fifty were then randomly assigned to the group with the new cream.and 50 were randomly assigned to the group with the cream with no active ingredient After three days, the subjects' level of irritation was measured. Which of the following statements is true about the benefits of random assignment? The variability botween each subject may not be evenly distributed between the two groups, so any observed differences in the lovel of irritation between the two groups would not be due to the new cream The variability between each subject would be evenly distributed between the two groups, so any observed differences in the lovel of irritation between the two groups are more likely due to the new cream. The variability between each type of cream would be evenly distributed between the two groups, so any observed differences in the level of imtation between the two groups are guaranteed to be due

Answer 1

The correct statement is: "The variability between each subject would be evenly distributed between the two groups, so any observed differences in the level of irritation between the two groups are more likely due to the new cream."

Answer 2

## Step 1The problem is about understanding the concept of random assignment in experimental design. Random assignment is a method used in experiments to ensure that each participant has an equal chance of being placed in any group. This is done to minimize bias and ensure that the groups are comparable.## Step 2The problem presents three statements about the benefits of random assignment. The task is to identify the correct statement.## Step 3The correct statement is the one that accurately describes the benefits of random assignment. In this case, the correct statement is: "The variability between each subject would be evenly distributed between the two groups, so any observed differences in the level of irritation between the two groups are more likely due to the new cream."

Problemas

Roztwór

Respuesta

Explicación