Question

Read the scenario and answer the question that follows: An experiment was set up to study...

Read the scenario and answer the question that follows: An experiment was set up to study two drugs, Lipanthyl and Befizal, based on their effect on cholesterol level in blood. A group of 25 men with high cholesterol level were randomly assigned one of the two drugs. The level of LDL was measured right before the treatment and again after the 3-month treatment. Suppose we wanted to compare the LDL levels pre and post treatment with Lipanthyl. 1. Would you perform a one-sample t-test, a paired t-test or an independent samples t-test on these data?2. Explain your answer. 3.Write down the explanatory variable and the response variable in this study.

Homework Answers

Answer #1

1. )

Answer: A paired t-test

Reason: We are considering only Lipanthyl. The same patients are measured pre and post treatent. So a paired t-test

2.)

We want to compare difference between mean values of LDL level measurement for the same patients taken at two different times. Thus the values are matched for every individual in each sample measurement. Hence, we should use a paired t-test.

3.)

Explanatory Variable: Treatment using drug Lipanthyl

Response Variable: Level of LDL in blood

Reason: We want to find out whether LDL level in blood is affected by the treatment. Thus, we want to check if using Lipanthyl affects the LDL level in blood.In this case, the treatment(or Lipanthyl) becomes independent variable(explanatory variable) and LDL level becomes dependent variable(response variable).

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Read the scenario and answer the question that follows: An experiment was set up to study...
Read the scenario and answer the question that follows: An experiment was set up to study two drugs, Lipanthyl and Befizal, based on their effect on cholesterol level in blood. A group of 25 men with high cholesterol level were randomly assigned one of the two drugs. The level of LDL was measured right before the treatment and again after the 3-month treatment. Suppose we wanted to compare the LDL levels of the subjects on Lipanthyl versus those on Befizal....
A researcher wishes to test a hypothesis, using a 5% level of significance, to see if...
A researcher wishes to test a hypothesis, using a 5% level of significance, to see if the average level of cholesterol can be reduced from using a medical treatment for a particular population. If one wishes to perform a one-side one-sample t test, and wishes that the t test to have a power of 0.80 to detect a reduction of 10mg/100ml in cholesterol (LDL), how large a sample would be needed? (From a pilot study, the estimated standard deviation of...
2. A study was set up to look at whether there was a difference in the...
2. A study was set up to look at whether there was a difference in the mean arterial blood pressure between two groups of volunteers, after 6 weeks of following one of two treatment programs. One group of volunteers were given an exercise regimen to follow for the 6 weeks and the other group were given the same exercise regimen with the addition of an experimental tablet. Which type of t-test should be used in this situation?
 a. One sample...
Question 16 A researcher conducts a study in which the same participants are observed across each...
Question 16 A researcher conducts a study in which the same participants are observed across each level of the independent variable. If there are only two levels of the independent variable, then what type of t test is appropriate for this study? a. There is not enough information to answer this question. b. related-samples t test c. two-independent-sample t test d. one-sample t test
Write the corresponding letter of the distribution used to conduct the test to answer the question...
Write the corresponding letter of the distribution used to conduct the test to answer the question or to find the probability requested in the blank to the left of the given information. You will only use each letter once. Student’s T Standard Normal Chi-Square Binomial Poisson ________________ Researchers want to study the effect of a new drug on reducing cholesterol levels. A sample of 500 individuals with high cholesterol were randomly assigned to one of two groups (placebo, drug). The...
Read the scenarios 1 and 2 below and identify their type of study as Observational, Cohort,...
Read the scenarios 1 and 2 below and identify their type of study as Observational, Cohort, Prospective, Cross-sectional, Retrospective, Case-Control, Randomized experiment, Randomized block experiment or double-blind experiment. Some studies may have more than one identifier. Then, explain why you selected that study type.  Scenario 1: A researcher wants to determine if consuming oatmeal regularly reduces the level of bad cholesterol. She finds 120 adults over the age of 40 who regularly consume oatmeal in their daily diets and...
A serum cholesterol level above 250 mg/dl of blood is a risk factor for cardiovascular disease...
A serum cholesterol level above 250 mg/dl of blood is a risk factor for cardiovascular disease in humans.  At a medical center in St. Louis, a study to test the effectiveness of new cholesterol-lowering drug was conducted.  One hundred people with cholesterol levels between 250 mg/dl and 300 mg/dl were available for this study.  Fifty people were assigned at random to each of two treatment groups.  One group received the standard cholesterol-lowering medication and the other group received the new drug.  After taking the drug...
An experiment was conducted for better understanding of the effectiveness of a particular type of drug...
An experiment was conducted for better understanding of the effectiveness of a particular type of drug for reducing bad cholesterol (LDL) level. The purpose of the experiment was to determine whether different dosages used have significant different outcomes in average LDL reduction. Twenty subjects with LDL at around 250 to 300 mg/dL had participated in the study and were randomly divided into four groups. Each group was given a specific level of dosage of the drug each day for one...
1. Several baseline studies are conducted on X = “cholesterol level (mg/dL)” in a certain population...
1. Several baseline studies are conducted on X = “cholesterol level (mg/dL)” in a certain population of individuals. From the given information described below for each of these studies, choose the LETTER of the most appropriate statistical test to be implemented, from the following list. Note: For each study, there is only one correct choice of test. However, a given statistical test can be the correct choice for more than one study. For example, choice A could be the correct...
For each of the following scenarios, identify: the population of interest, the outcome variable being measured...
For each of the following scenarios, identify: the population of interest, the outcome variable being measured on each observational unit, whether the outcome variable being measured is categorical or quantitative/Continuous, the parameter of interest, define both in words and using the appropriate statistical symbol (π, π1 -π2, µ, µ1 - µ2, or µd), and the null and alternative hypotheses, written in correct statistical notation (not in words) Name the hypothesis test you would use. For example, some tests we have...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT