Question: Which type of study is this? a. A prospective observational study because it followed the maids for four weeks. b. A retrospective observational study because

Which type of study is this?

a. A prospective observational study because it followed the maids for four weeks.

b. A retrospective observational study because at the end of four weeks, the researcher had to look back at the original measurements.

c. A survey because the maids were randomly selected.

d. A designed experiment because a randomly selected group was treated differently and the researcher was interested in the effect of that treatment.

e. A voluntary response study because the maids volunteered to participate.

Step by Step Solution

★★★★★

3.45 Rating (165 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock

The ... View full answer

blur-text-image
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 Introduction to MATLAB Questions!

Q:

When either type of study is feasible, an experiment is usually preferred over an observational study. Explain why, using an example to illustrate. Also explain why it is not always possible for...

Q:

What type of study is this? Hypertension Suppose that 200 obese (BMI 25) children and 500 normal-weight (BMI

Q:

A medical researcher designed an experiment to study the impact of three exercise regi­mens (30, 60, and 90 minutes per week) on the total blood cholesterol level in active adult males. The...

Q:

Which type of study is this? a) A prospective observational study because it followed the maids for four weeks. b) A retrospective observational study because at the end of four weeks, the researcher...

Q:

A farmer wants to compare the tastiness and juiciness of tomatoes grown with three amounts of a newfertilizer: none, half the recommendedamount, and the full recommended amount. The farmer allocates...

Q:

Question 10 (4 points) Past observations suggest that patients who underwent carotid endarterectomy (an operation that removes blockage from the inside of a carotid artery to restore blood flow to...

Q:

Please help 1 In a double-blind experiment designed to test the effectiveness of a new medication as a treatment for lower back pain, 1643 patients were randomly assigned to one of three groups: (1)...

Q:

1. OnJuly 7, 2010, The Gallup organization conducted a telephone poll of 1,007 random adults in all 50 U.S. states and the District of Columbia. They found that 38% strongly opposed the federal...

Q:

Patients eligible for the study will be selected on Fridays during the HIV consultation at the Infectious Diseases Department. Patients that meet the inclusion and exclusion criteria will be randomly...

Q:

A factory manufactures motorcycles. One of its employees, working in the quality control department, checks the last 10 motorcycles manufactured in a day. This is what type of sampling? Stratified...

Q:

Problem 9.52 Figure 1 of 1 1 in.1 in. 5 in.- 4 -5 in.-- 3 in. + 8 in. X Part A Locate the centroid for the wire. Neglect the thickness of the material and slight bends at the corners. (Figure 1)...

Q:

The peguins at the zoo eat 3(3)/(4) pounds of fish each day. The zookeeper bought 7(1)/(2) pounds of fish. How many days will the fish last?

Q:

prove ( 1 - 1 / n ^ 2 ) = ( n + 1 ) / 2 n ( 1 - 1 / n ^ 2 ) = ( n + 1 ) / 2 n

Q:

3. Wfreheadto imf t hoef eexmpprelosysieoen i nca qsuees?stion had been attached to the presidents local security detail in Washington, D.C., during the time of the assassination attempt. Might this...

Q:

When drawing five cards randomly from a deck, which is more likely, two pairs or three of a kind? A pair is exactly two of the same denomination. Three of a kind is exactly 3 of the same...

Q:

In the chapter's example, 20% of the cereal boxes contained a picture of Hope Solo, 30% Danica Patrick, and the rest Blake Griffin. Suppose you buy five boxes of cereal. Estimate the probability that...

Q:

Suppose you really want the Hope Solo picture. How many boxes of cereal do you need to buy to be pretty sure of getting at least one? First, define what "pretty sure" means to you. Then run a...

Q:

8 . 5 0 % , but you must make interest payments at the end of each quarter and then pay off the $ 1 0 , 0 0 0 principal amount at the end of the year. What is the effective annual rate on the loan? 8...

Q:

i need help as soon as possible. thank you average P/E for the competing firms, is MeKong a good buy? Why? Yes, because MeKong is undervalued by $10 Yes, because MeKong is overvalued by $10 No,...

Q:

Beginning in 5 years, (beginning of years 5, 6 and 7) Sally Mander will receive three annual benefit checks of $25,000 each. If Sally assumes an interest rate of 6%, what is the present value of...