If we conduct a matched pairs experiment using small samples, what assumptions are needed for the...
If we conduct a matched pairs experiment using small samples, what assumptions are needed for the small-sample confidence interval for the mean difference to be valid?
Homework Answers
Answer)
Assumptions for matched pair experiment are
1)
The variable which is dependent should.be continuous (interval or ratio)
2)
The observations should be independent of each other
3)
The dependent variable must not have any outlier
4)
The sample should.be from normally distributed population.
Add Answer to:
If we conduct a matched pairs experiment using small samples,
what assumptions are needed for the...
The accompanying table contains two samples that were collected as matched pairs. Complete parts a and...
The accompanying table contains two samples that were collected as matched pairs. Complete parts a and b below. Click the icon to view the data table. a) Let the parameter of interest be the population mean of matched-pair differences for Sample 1 minus Sample 2. The 90% confidence interval to estimate difference in means between the populations from which Sample 1 and 2 were drawn has a lower limit and an upper limit 0 (Round to two decimal places as...
i need this quick please Matched Pairs 046e A study was conducted to measure the effectiveness...
i
need this quick please
Matched Pairs 046e A study was conducted to measure the effectiveness of hypnotism in reducing pain. The m centimeters on a pain scale before and after hypnosis. Assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal. Construct a46 95% confidence Interval for the mean of the â"before-ae-after differences. Does hypnotism appear to be effective in reducingå 92 9.3 8.6 Before After 4.0 2.5...
The accompanying table contains two samples that were collected as matched pairs. Complete parts a and...
The accompanying table contains two samples that were collected as matched pairs. Complete parts a and b below. Click the icon to view the data table. 5 Click the icon to view a portion of the Student's t-Distribution table. a) Construct a 95% confidence interval to estimate difference in means between the populations from which Sample 1 and 2 were drawn. i Data Table - X UCLa = 0 LCLa = 0 (Round to two decimal places as needed.) Pair...
IDENTIFYING THE METHOD OF ANALYSIS In Evercises Ci to C8,identify the method of analysis needed to answer the question. Indicate whether we should conduct a hypothesis test or find a confidence...
IDENTIFYING THE METHOD OF ANALYSIS In Evercises Ci to C8,identify the method of analysis needed to answer the question. Indicate whether we should conduct a hypothesis test or find a confidence interval and also indicate whether the analysis will be done on a proportion, a mean, a difference in proportions, a difference in means, or a matched pairs difference in means. C.2 Use results collected at a supermarket to see whether there is a difference in the average amount of...
Using techniques from Section 8.2, we can find a confidence interval for μd. Consider a random...
Using techniques from Section 8.2, we can find a confidence interval for μd. Consider a random sample of n matched data pairs A, B. Let d = B − A be a random variable representing the difference between the values in a matched data pair. Compute the sample mean d of the differences and the sample standard deviation sd. If d has a normal distribution or is mound-shaped, or if n ≥ 30, then a confidence interval for μd is...
Construct a 99% confidence interval to estimate the population mean using the following data. What assumptions...
Construct a 99% confidence interval to estimate the population mean using the following data. What assumptions need to be made to construct this interval? x=88 20 n 11 What assumptions need to be made to construct this interval? Tre O A. The population mean will be in the confidence interval. en OB. The sample size is less than 30. et c . The population must be normally distributed. D. The population is skewed to one side. With 99% confidence, when...
Of 565 samples of seafood purchased from various kinds of food stores in different regions of...
Of 565 samples of seafood purchased from various kinds of food stores in different regions of a country and genetically compared to standard gene fragments that can identify the species, 51% were mislabeled. a) Construct a 99% confidence interval for the proportion of all seafood sold in the country that is mislabeled or mislabeled or misidentified. b) Explain what your confidence interval says about seafood sold in the country. c) A government spokesperson claimed that the sample size was too...
A paired difference experiment produced the following data: nD = 18 x1 = 92 &nbs
A paired difference experiment produced the following data: nD = 18 x1 = 92 x2 = 95.5 xD = -3.5 sD2 = 21 Determine the values of t for which the null hypothesis, µ1 - µ2 = 0, would be rejected in favor of the alternative hypotheses, µ1 - µ2 < 0. Use α = .10. Conduct the paired difference test described in part a. Draw the appropriate conclusions. What assumptions are necessary so that the paired difference test...
The accompanying table shows two samples that were collected as matched pairs Pair Sample 1 Sample...
The accompanying table shows two samples that were collected as matched pairs Pair Sample 1 Sample 2 1 10 5 2 6 1 3 4 8 4 9 4 5 7 3 6 6 10 7 7 1 8 9 4 Calculate the appropriate test statistic and interpret the results of the hypothesis test using ?=0.01. The test statistic is Identify the? p-value and interpret the result.
Data we Consider the following hypothesis test. (a) The following data are from matched samples taken...
Data we
Consider the following hypothesis test. (a) The following data are from matched samples taken from two populations. Compute the difference value for each element. (Use Population 1 Population 2.) Population Element 1 2 Difference 21 20 1 2 28 26 2 15 3 19 1 3 18 4 20 5 26 23 (b) Compute d 2 (c) Compute the standard deviation sd. 7 (d) Conduct a hypothesis test using α Calculate the test statistic. (Round your answer to...
The accompanying table contains two samples that were collected as matched pairs. Complete parts a and b below. Click the icon to view the data table. a) Let the parameter of interest be the population mean of matched-pair differences for Sample 1 minus Sample 2. The 90% confidence interval to estimate difference in means between the populations from which Sample 1 and 2 were drawn has a lower limit and an upper limit 0 (Round to two decimal places as...
i
need this quick please
Matched Pairs 046e A study was conducted to measure the effectiveness of hypnotism in reducing pain. The m centimeters on a pain scale before and after hypnosis. Assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal. Construct a46 95% confidence Interval for the mean of the â"before-ae-after differences. Does hypnotism appear to be effective in reducingå 92 9.3 8.6 Before After 4.0 2.5...
The accompanying table contains two samples that were collected as matched pairs. Complete parts a and b below. Click the icon to view the data table. 5 Click the icon to view a portion of the Student's t-Distribution table. a) Construct a 95% confidence interval to estimate difference in means between the populations from which Sample 1 and 2 were drawn. i Data Table - X UCLa = 0 LCLa = 0 (Round to two decimal places as needed.) Pair...
IDENTIFYING THE METHOD OF ANALYSIS In Evercises Ci to C8,identify the method of analysis needed to answer the question. Indicate whether we should conduct a hypothesis test or find a confidence interval and also indicate whether the analysis will be done on a proportion, a mean, a difference in proportions, a difference in means, or a matched pairs difference in means. C.2 Use results collected at a supermarket to see whether there is a difference in the average amount of...
Construct a 99% confidence interval to estimate the population mean using the following data. What assumptions need to be made to construct this interval? x=88 20 n 11 What assumptions need to be made to construct this interval? Tre O A. The population mean will be in the confidence interval. en OB. The sample size is less than 30. et c . The population must be normally distributed. D. The population is skewed to one side. With 99% confidence, when...
Data we
Consider the following hypothesis test. (a) The following data are from matched samples taken from two populations. Compute the difference value for each element. (Use Population 1 Population 2.) Population Element 1 2 Difference 21 20 1 2 28 26 2 15 3 19 1 3 18 4 20 5 26 23 (b) Compute d 2 (c) Compute the standard deviation sd. 7 (d) Conduct a hypothesis test using α Calculate the test statistic. (Round your answer to...
Most questions answered within 3 hours.
-
Discuss the Coefficient of Restitution in an elastic collision
compared to the Coefficient of Restitution in...
asked 54 seconds ago -
Pretend that you are
the audit manager on an annual financial statement audit engagement
for a...
asked 9 minutes ago -
A certain lens focuses light from an object 1.65 m away as an
image 41.8 cm...
asked 9 minutes ago -
Which metal has a resistivity that is within the range or
closest to 4.2X10^-6 to 4.7X10^-6...
asked 15 minutes ago -
5.) Suppose a researcher collected data on the mean height of
tomato plants grown in organic...
asked 27 minutes ago -
(b) A medical statistician wants to estimate the average weight
loss of people who are on...
asked 32 minutes ago -
In scala,
Can you explain what is the difference between them, and why the
first one...
asked 32 minutes ago -
True (T) or False (F) Questions
In a queuing system, if the system’s utilization is 100%,...
asked 42 minutes ago -
What is the total energy transported per hour along a narrow
cylindrical laser beam 1.60 mm...
asked 50 minutes ago -
Key Assessment PAT 6: Sayles Chapter 14 Application Exercise
2
Beginning January 1, Community Hospital had...
asked 55 minutes ago -
Let's assume the following data represents the time from when a
patient is discharged from North...
asked 1 hour ago -
A destination marketing campaign creates an adventurous, the
only-one-of- its-kind type of theme with the destination...
asked 1 hour ago