In Exercise identify which of these types of sampling is used: random, systematic, convenience, stratified, cluster.Acupuncture Study In a study of treatments for back pain, 641 subjects were randomly assigned to the four different treatment groups of individualized acupuncture, standardized acupuncture, simulated acupuncture, and usual care (based on data from “A Randomized Trial Comparing Acupuncture, Simulated Acupuncture, and Usual Care for Chronic Low Back Pain,” by Cherkin et al., Archives of Internal Medicine , Vol. 169, No. 9).

Question
Asked Dec 17, 2019
18 views

In Exercise identify which of these types of sampling is used: random, systematic, convenience, stratified, cluster.

Acupuncture Study In a study of treatments for back pain, 641 subjects were randomly assigned to the four different treatment groups of individualized acupuncture, standardized acupuncture, simulated acupuncture, and usual care (based on data from “A Randomized Trial Comparing Acupuncture, Simulated Acupuncture, and Usual Care for Chronic Low Back Pain,” by Cherkin et al., Archives of Internal Medicine , Vol. 169, No. 9).

check_circle

Expert Answer

Step 1

Simple random sampling:

If a sample of n subjects is selected and every unit in the population has the equal chance of being selected into the considered sample, then it is termed as simple random sampling.

Systematic sampling:

Systematic sampling involves of first considering a starting point for selecting the sample and then selecting every  unit in the population.

Convenience sampling:

The convenience sampling is taken by using the subjects that are easily available to be considered into the sample.

Stratified s...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Math

Statistics

Advanced Topics in Statistics

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: An airline recently polled all of its loyalty card customers and discovered that 22.5% are planning ...

A: It is given that the population proportion, P is 0.225.The sample size is 144.

question_answer

Q: The length of time it takes to fill an order at a ABC sandwich shop is normally distributed with a m...

A: Hey, since there are multiple questions posted, we will answer first question. If you want any speci...

question_answer

Q: Suppose  N = 20  and  r = 4.  What is the probability of  x = 3  for  n = 15?

A: The probability of X = 3 for n = 15 is obtained below:The probability distribution of the hyper geom...

question_answer

Q: For Chapter 2 through Chapter 14, the Cumulative Review Exercises include topics from preceding chap...

A: The value of the expression is,

question_answer

Q: I need answer C & H . H IS NOT 977.831 AND H IS NOT 13.910

A: Given data Mean = 24 minutesn = 40standard deviation = 2.2c)The distribution of ∑x is given byE(∑X) ...

question_answer

Q: In a survey, the planning value for the population proportion is  p* = 0.33.  How large a sample sho...

A: It is given that the population proportion is 0.33.It is known that the critical value for 95% confi...

question_answer

Q: Statistical Significance and Practical Significance. In Exercises 13–16, determine whether the resul...

A: Statistical significance:In the study, when the result obtained is very unlikely to occur just by ch...

question_answer

Q: In a situation where the sample size was decreased from 39 to 29 in a normally distributed data set,...

A: Confidence interval formula is given by

question_answer

Q: A group conducted a survey of 13,000 brides and grooms married in the United States and found that t...

A: (a)The probability that a wedding costs less than $18,000 is obtained below:From the given informati...