Question: Determine whether the study is an observational study or an experiment. Explain. (a) Researchers conduct a study to determine whether body mass index (BMI) influences

Determine whether the study is an observational study or an experiment. Explain.

(a) Researchers conduct a study to determine whether body mass index (BMI) influences mortality. To conduct the study, researchers obtained the BMIs of 3,951,455 people.

(b) Researchers conduct a study to determine whether taking a multivitamin daily affects cognitive health among men as they age. To perform the study, researchers studied 5947 male physicians ages 65 years or older and had one group take a multivitamin daily and had another group take a placebo daily.

Step by Step Solution

★★★★★

3.28 Rating (154 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a Observational study The study does ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Elementary Statistics In Social Research Questions!

importance of workalike balance for women as a leader in healthcare. 1. The purpose of the research; 2. Research question/s; 3. Findings and relevant data; 4. Any recommendations and; 5. The...

The authors of the paper Fudging the Numbers: Distributing Chocolate Influences Student Evaluations of an Undergraduate Course (Teaching in Psychology [ 2007]: 245 247) carried out a study to see if...

3M plans to introduce a new paint to the market. As the production planner, you have assembled the following cost data and demand forecast for the upcoming year: Cost: Beginning inventory: 0 barrel,...

17. The four departments of a printing company are listed Administration Sales Production Billing 18. The total compensations (in millions of dollars ) of the top ten CEOs in the United States are...

Need help with all screenshots below! PLEASE NUMBER THEM AS I HAVE! THANK YOUUUUUUU!!!!! The Future Government Club wants to sponsor a panel discussion on the upcoming national election. The club...

i want solf for 7qustion The prevalence of obesity and overweight among adults has drastically increased during the past decade. Anthropometric indices such as body mass index (BMI) and total body...

1.If the difference between the hypothesized population mean and the mean of the sample is large, we ___ the null hypothesis. If the difference between the hypothesized population mean and the mean...

Board CHAPTER 1 Economics: Foundations and Models n this book, we use economics to answer questions such as the following What determines the prices of goods and services from bottled water to smart...

Introduction to research method Trends of Obesity and Overweight among College Students in Oman Hashim Al-Kilani; Mostafa Waly; and Randa Yousef Sultan Qaboos Univ Med J. 2012 Feb; 12(1): 6976 The...

An organization would like to introduce one of two types of new manufacturing processes to increase the productivity of workers. Both involve heavy investment in expensive technology. The company...

Use the appropriate transformation method to show that the sam- ple mean of n observations from a N(u, o) distribution, denoted as . . %3D is also normally distributed, for any sample size n 2 1....

The following information relases to a company's accounts recelvable: gross accounss receivable balance at the beginning of the yeas $ 3 0 0 , 0 0 0 , allowance for uncollectible accounts at the...

Criteria used in seeking prospective corporations for the business aircraft include a. two or more persons traveling together. c. financially stable. b. trips in excess of 150 miles one-way. d. all...

A misleading graph is a statistical graph that is not drawn appropriately. This type of graph can misrepresent data and lead to false conclusions. In Exercises 38, (a) Explain why the graph is...

A misleading graph is a statistical graph that is not drawn appropriately. This type of graph can misrepresent data and lead to false conclusions. In Exercises 39, (a) Explain why the graph is...

A misleading graph is a statistical graph that is not drawn appropriately. This type of graph can misrepresent data and lead to false conclusions. In Exercises 40, (a) Explain why the graph is...

4 Alfred Enterprises (AE) has two manufacturing divisions: the Sydney division and the Melbourne division. The Sydney division produces motors which are sold to the Melbourne division and to outside...

Ariana, Incorporated, is considering a project that will result in initial aftertax cash savings of $ 6 . 3 million at the end of the first year, and these savings will grow at a rate of 3 percent...

L01 6. Calculate the 6. Calculating Expected Return. Based on the following information, calculate the expected return. State of Economy Probability of State of Economy Rate of Return If State Occurs...