Homework Answers
Ans. Sampling error - it is any type of bias that is attributable to mistakes in either drawing a sample or determining the sample size
Sampling error is the difference between data obtained from random sampling and data obtained from entire population
A sample is a subset of a population who is selected to participate in a research study and that represent the whole population
Sampling two types
1. Probability sampling
- simple random sampling
- stratified random sampling
- cluster random sampling
- systematic random sampling.
2. Non probability sampling
- convenience
- quota sampling
- purposive sampling
Add Answer to:
Explain how sampling error can affect a researcher's ability to generalize the results of a study...
After viewing the powerpoint on for chapter 12 answer the following: 1. How do inclusion and...
After viewing the powerpoint on for chapter 12 answer the following: 1. How do inclusion and exclusion criteria contribute to increasing the strength of evidence by the sampling strategy of a research study? 2. Why is it important for a researcher to use power analysis to calculate sample size? How does adequate sample size affect subject mortality, representativeness of the sample, the researcher's ability to detect a treatment effect, and your ability to generalize the study findings to your patient...
A) A researcher believes that a particular study exhibits large sampling error. What does the researcher...
A) A researcher believes that a particular study exhibits large sampling error. What does the researcher mean by sampling error? B) How can sampling error be diminished? C) Discuss why one of the following methods of sample selection might yield sampling error: convenience, snowball, or judgmental.
What is hypothesis testing? How would you explain it to someone who has not had as...
What is hypothesis testing? How would you explain it to someone who has not had as much statistical experience as you? What is the difference between the null and alternate hypotheses? What does the p-value tell you? When do you reject the null hypothesis or fail to reject the null hypothesis? Explain how collecting data (i.e. convenience sampling, randomly selected sample, etc.) for the samples could impact the ability to generalize your results to the whole population.
Explain the difference between ‘sampling bias and ‘sampling error’, and a how a researcher would decrease...
Explain the difference between ‘sampling bias and ‘sampling error’, and a how a researcher would decrease sampling error and sampling bias. Explain why reducing each is important for testing a hypothesis.
explain calculatior functions as well please. Find the indicated probability or percentage for the sampling error....
explain calculatior functions as well please.
Find the indicated probability or percentage for the sampling error. 8) Scores on an aptitude test are distributed with a mean of 220 and a standard deviation of 30. The shape of the distribution is unspecified. What is the probability that the sampling error made in esti mating the population mean by the mean of a random sample of 50 test scores will be at most 5 points? A) 0.762 B) 0.881 C) 0.135...
Understanding the sampling process will contribute to your ability to critique research from a consumer's point...
Understanding the sampling process will contribute to your ability to critique research from a consumer's point of view. This week's Forum Discussion will help you to develop your sampling strategy based upon your PICOT. It should be approached in relation to the parameters or attributes of the study population, representative of the defined population, appropriateness of the sampling plan to the research design, appropriateness and justification of the sample size, and evidence that the rights of human participants (subjects) have...
In your own words, explain what sampling error is. Why is sampling error such an issue...
In your own words, explain what sampling error is. Why is sampling error such an issue when it comes to inferential statistics. What is alpha? What does it represent in hypothesis testing? Now that you know a little more about hypothesis testing, how do you feel about the fact that hypothesis testing will never give you a certain answer—that there’s always a possibility of creating a Type I or Type II error?
If you wish to estimate a population mean with a sampling distribution error SE = 0.34...
If you wish to estimate a population mean with a sampling distribution error SE = 0.34 using a 95% confidence interval and you know from prior sampling that σ² is approximately equal to 5.9, how many observations would have to be included in your sample?
Im asking this again because the last answer was not helpful. researcher's conciusion correct? Explain your...
Im asking this again because the last answer was not
helpful.
researcher's conciusion correct? Explain your answer. 16. In a population, μ 100 and σ,-25. A sample of 150 people has X- 120. Using two tails and the 05 criterion: (a) What is the critical value? (b) Is this sample mean in the region of rejection? How do you know? (c) What does the mean's loca- tion indicate about the likelihood of this sample occurring in this population? (d) What...
If you wish to estimate a population mean with a sampling distribution error SE= 0.33 using...
If you wish to estimate a population mean with a sampling distribution error SE= 0.33 using a 95% confidence interval and you know from prior sampling that is approximately equal to 7.6, how many observations would have to be included in your sample? The number of observations that would have to be included in your sample is (Round up to the nearest observation.)
explain calculatior functions as well please.
Find the indicated probability or percentage for the sampling error. 8) Scores on an aptitude test are distributed with a mean of 220 and a standard deviation of 30. The shape of the distribution is unspecified. What is the probability that the sampling error made in esti mating the population mean by the mean of a random sample of 50 test scores will be at most 5 points? A) 0.762 B) 0.881 C) 0.135...
Im asking this again because the last answer was not
helpful.
researcher's conciusion correct? Explain your answer. 16. In a population, μ 100 and σ,-25. A sample of 150 people has X- 120. Using two tails and the 05 criterion: (a) What is the critical value? (b) Is this sample mean in the region of rejection? How do you know? (c) What does the mean's loca- tion indicate about the likelihood of this sample occurring in this population? (d) What...
If you wish to estimate a population mean with a sampling distribution error SE= 0.33 using a 95% confidence interval and you know from prior sampling that is approximately equal to 7.6, how many observations would have to be included in your sample? The number of observations that would have to be included in your sample is (Round up to the nearest observation.)
Most questions answered within 3 hours.
-
python
Define a function called print_values which takes a dictionary
object as a parameter. The function...
asked 27 minutes ago -
In Chapter 1 you created a program named Triangle in
which you displayed a seven-line triangle...
asked 22 minutes ago -
Research question: What are the differences between separately
stated and non separately stated transactions in an...
asked 45 minutes ago -
By using Arduino write a code that connects two LEDs to two
push-buttons. Each button controls...
asked 1 hour ago -
Bank of America has bonds that pay a coupon interest rate of 5.5
percent and mature...
asked 2 hours ago -
Problem: Patient Fees C++
You are to write a program that computes a patient’s bill for...
asked 4 hours ago -
In a population of interest, we know that, 77% drink coffee, and
23% drink tea. Assume...
asked 4 hours ago -
Given that f(x) = e-(x-1) for x > 1, determine the following
probabilities:
a) P(X <...
asked 4 hours ago -
A mechanic pushes a 2.60 ✕ 103-kg car from rest to a speed of v,
doing...
asked 4 hours ago -
International information systems result in all of the following
except:
A. improved quality of information flow....
asked 4 hours ago -
The president of the retailer Prime Products has just approached
the company’s bank with a request...
asked 4 hours ago -
If the carrying amount is $200,000 and recoverable amount is
$205000, the impairment amount is:
Select...
asked 4 hours ago