Which statement about sampling for a pilot study is true? A. The sample for a pilot...
Which statement about sampling for a pilot study is true?
| A. |
The sample for a pilot should be drawn from the same population as will be used in the main trial. |
|
| B. |
A sample size of 40 (20 per group) is usually adequate for a pilot trial. |
|
| C. |
The pilot sample usually is folded into the sample for the full trial. |
|
| D. |
It would be wasteful for the pilot sample size to exceed 100 participants. |
Homework Answers
answer is B
reason: the pilot sample usually 40(20 per group) usually adequate for a pilot trial because most of the researchers had advised to take the sample of pilot study from 20 to 40 so its adequate.
Add Answer to:
Which statement about sampling for a pilot study is true?
A.
The sample for a pilot...
Which statement about sampling for a pilot study is true? A. The sample for a pilot...
Which statement about sampling for a pilot study is true? A. The sample for a pilot should be drawn from the same population as will be used in the main trial. B. A sample size of 40 (20 per group) is usually adequate for a pilot trial. C. It would be wasteful for the pilot sample size to exceed 100 participants. D. The pilot sample usually is folded into the sample for the full trial. Question 8 Which is not...
Which of the following is true about the sampling distribution of means? Shape of the sampling...
Which of the following is true about the sampling distribution of means? Shape of the sampling distribution of means is always the same shape as the population distribution, no matter what the sample size is. Sampling distribution of the mean is always right skewed since means cannot be smaller than 0. Sampling distributions of means are always nearly normal. Sampling distributions of means get closer to normality as the sample size increases.
Which of the following is true about mixed methods sampling? a. Participants are always selected for...
Which of the following is true about mixed methods sampling? a. Participants are always selected for both the qualitative phase and the quantitative phase using purposeful sampling. b. Snowball sampling is rarely used in a mixed methods research design because it produces a sample that is too similar to provide useful information. c. Many mixed methods studies collect data from the same pool of participants, but samples can also be completely independent. d. The sampling from the quantitative phase is...
Which of the following statements about the sampling distribution of the sample mean, x-bar, is not...
Which of the following statements about the sampling distribution of the sample mean, x-bar, is not true? The distribution is normal regardless of the shape of the population distribution, as long as the sample size,n, is large enough. The distribution is normal regardless of the sample size, as long as the population distribution is normal. The distribution's mean is the same as the population mean. The distribution's standard deviation is smaller than the population standard deviation. All of the above...
Which of the following is an accurate statement regarding sampling distribution? A. Each population exception rate...
Which of the following is an accurate statement regarding sampling distribution? A. Each population exception rate and sample size has the same sampling distribution. B. Sampling distributions allow the auditor to make probability statements about the likely representativeness of any sample that is in the distribution. C. Auditors cannot use sampling distributions to draw statistical conclusions about the unknown population being sampled. D. A sampling distribution is a sample with characteristics the same as those of the population.
Check off all the statements that are true about sample surveys. a. Assigning treatments to participants...
Check off all the statements that are true about sample surveys. a. Assigning treatments to participants is important in sample surveys b. It is important to determine the population of interest before collecting a sample. c. There are many types of blases such as voluntary response sampling and response bias. d. The sample size necessary for sample surveys is determined by how large the population size. e. The key idea of sample surveys is to determine a cause and effect...
A pilot study to evaluate the serum alpha tocopherol levels (serum vitamin E) was conducted to...
A pilot study to evaluate the serum alpha tocopherol levels (serum vitamin E) was conducted to evaluate the toxicity among 14people who regularly take vitamin-E supplements. The vitamin E levels for the 15 participants are listed below. If the level of alpha tocopherol in the general population 875μg/dL, conduct a hypothesis test to determine if those who take supplements have significantly different levels of serum alpha tocopherol with alpha = 5% and the sample standard deviation is 479.92μg/dL. 660 2030...
Which of the following statements about the sampling distribution of the sample mean, x-bar, is not...
Which of the following statements about the sampling distribution of the sample mean, x-bar, is not true? The distribution is normal regardless of the shape of the population distribution, as long as the sample size, n, is large enough. The distribution is normal regardless of the sample size, as long as the population distribution is normal. The distribution's mean is the same as the population mean. The distribution's standard deviation is smaller than the population standard deviation. All of the...
Complete parts (a) through (d) for the sampling distribution of the sample mean shown in the...
Complete parts (a) through (d) for the sampling distribution of the sample mean shown in the accompanying graph. Click the icon to view the graph. (a) What is the value of w;? The value of n; is (b) What is the value of o:? The value of ozis (c) the sample size is n=9, what is likely true about the shape of the population? O A. The shape of the population is skewed right. OB. The shape of the population...
1. Select all true statements about sample mean and sample median. A) When the population distribution...
1. Select all true statements about sample mean and sample median. A) When the population distribution is skewed, sample mean is biased but sample median is an unbiased estimator of population mean. B) When the population distribution is symmetric, both mean and sample median are unbiased estimators of population mean. C) Sampling distribution of sample mean has a smaller standard error than sample median when population distribution is normal. D) Both mean and median are unbiased estimators of population mean...
Which statement about sampling for a pilot study is true? A. The sample for a pilot should be drawn from the same population as will be used in the main trial. B. A sample size of 40 (20 per group) is usually adequate for a pilot trial. C. It would be wasteful for the pilot sample size to exceed 100 participants. D. The pilot sample usually is folded into the sample for the full trial. Question 8 Which is not...
Check off all the statements that are true about sample surveys. a. Assigning treatments to participants is important in sample surveys b. It is important to determine the population of interest before collecting a sample. c. There are many types of blases such as voluntary response sampling and response bias. d. The sample size necessary for sample surveys is determined by how large the population size. e. The key idea of sample surveys is to determine a cause and effect...
Which of the following statements about the sampling distribution of the sample mean, x-bar, is not true? The distribution is normal regardless of the shape of the population distribution, as long as the sample size, n, is large enough. The distribution is normal regardless of the sample size, as long as the population distribution is normal. The distribution's mean is the same as the population mean. The distribution's standard deviation is smaller than the population standard deviation. All of the...
Complete parts (a) through (d) for the sampling distribution of the sample mean shown in the accompanying graph. Click the icon to view the graph. (a) What is the value of w;? The value of n; is (b) What is the value of o:? The value of ozis (c) the sample size is n=9, what is likely true about the shape of the population? O A. The shape of the population is skewed right. OB. The shape of the population...
Most questions answered within 3 hours.
-
The Department of Transportation (DOT) would like to test the
hypothesis that the average age of...
asked 12 seconds ago -
Suppose Hoosiers, a specialty clothing store, rents space at a
local mall for one year, paying...
asked 2 minutes ago -
Some
critics of marketing have suggested that market segmentation and
target marketing lead to an unnecessary...
asked 2 minutes ago -
PART A: An electric current flows through a resistor. Which side
will have the higher electric...
asked 6 minutes ago -
An ideal heat engine has an efficiency of 18.9 percent. It
operates between two heat reservoirs...
asked 6 minutes ago -
3.11 (Modified Account Class) Modify class Account (Fig. 3.8 )
to
provide a method called withdraw...
asked 26 minutes ago -
What will be the resulting list after the following algorithm
has been applied to the list:...
asked 18 minutes ago -
For the following reaction, 5.24 grams of
iron are mixed with excess hydrochloric
acid. The reaction...
asked 22 minutes ago -
12.56 The SN2 reaction can occur intramolecularly (within the
same mol- ecule). What product would you...
asked 34 minutes ago -
If a company repurchases shares, then the proportionate
shareholdings of shareholders who do NOT participate
A....
asked 35 minutes ago -
1. For your column to work properly, it is very important that
you do not put...
asked 34 minutes ago -
Which of the following statements accurately defines
neuroglial cell?
A.
Central area of the cell containing...
asked 37 minutes ago