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22. One sample has M 18 and a second sample has M 14. If the pooled...
one sample has ss=36 and a second sample has ss=18 If n=4 for both samples, find...
one sample has ss=36 and a second sample has ss=18 If n=4 for both samples, find each of the sample variances and compute the pooled variance. Because the samples are the same size, you should find that the pooled variance is exactly halfway between the two sample variances. The first sample has ________ (choose one of the following 12.00, 9.00, 6.00, 3.00), and the second has s^2=______((choose one of the folloeing 12.00, 6.00, 3.00, 4.50). The pooled variance is s^2p=________(9.00,...
One sample has a mean of M = 6 and a second sample has a mean...
One sample has a mean of M = 6 and a second sample has a mean of M = 12. The two samples are combined into a single set of scores. (b) What is the mean for the combined set if the first sample has n = 4 scores and the second sample has n = 8? (c) What is the mean for the combined set if the first sample has n = 8 scores and the second sample has...
To An independent-measures t hypothesis test is appropriate when the value for a is known a....
To An independent-measures t hypothesis test is appropriate when the value for a is known a. b. the mean for a treated group of subjects is compared to a known population mean C. one sample is used to test a hypothesis about one population P there are two separate samples containing different subjects 17. One sample of n 5 scores has a variance of s 10 and a second sample of n= 10 scores has s pooled variance is computed...
A researcher has two samples of participants, and each sample experiences a different level of the...
A researcher has two samples of participants, and each sample experiences a different level of the independent variable. Sample A has 8 participants and Sample B has 10 participants. The corrected variance for Sample A is 7.71 and the corrected variance for Sample B is 9.34. What is the pooled degrees of freedom between the 2 samples? (hint: you shouldn’t use the pooled variance equation). Find the pooled variance using the pooled variance equation. Convert the pooled variance to variance...
QUESTION 12 One sample with n = 6 scores has a mean of ΣX = 18,...
QUESTION 12 One sample with n = 6 scores has a mean of ΣX = 18, and a second sample with n = 6 scores has a mean ofΣX = 6. If the two samples are combined, what is the weighted mean for the two sets of scores? A. 6 B. 18 C. 2 D. 4 PLEASE SHOW WORK
A researcher has two samples of participants, and each sample experiences a different level of the...
A researcher has two samples of participants, and each sample experiences a different level of the independent variable. Sample A has 8 participants and Sample B has 10 participants. The corrected variance for Sample A is 7.71 and the corrected variance for Sample B is 9.34. What is the pooled degrees of freedom between the 2 samples? (hint: you shouldn’t use the pooled variance equation). Find the pooled variance using the pooled variance equation. c . Add the two variance...
1. 2. 3. Assuming that other factors are held constant, which of the following would tend...
1.
2.
3.
Assuming that other factors are held constant, which of the following would tend to increase the likelihood of rejecting the null hypothesis? Decrease the sample size Increase the sample mean difference Increase the sample variance None of the other 3 options would increase the likelihood Which of the following is the correct null hypothesis for a repeated-measures t test? MD 0 M1 M2 One sample of n=8 scores has a variance of s 6 and a second...
A sample of n = 5 scores has a mean of M = 12. What is...
A sample of n = 5 scores has a mean of M = 12. What is SX for this sample? A. 12/5 =2.40 B. 5/12=0.417 C. 5(12)=60 D. Cannot be determined with info given. A population has a mean of m = 30. If 3 points are added to each scores, what is the mean for the new distribution? A. 27 B. 30 C. 33 A sample of n = 8 has a mean of M = 10. After one...
1. You have an independent-measures study where your first sample has an SS = 36 and...
1. You have an independent-measures study where your first sample has an SS = 36 and your second sample has an SS = 24. a. If your sample size for both samples is n = 5, find the sample variances and compute the pooled variance. b. On the other hand, if your samples have difference sample sizes, n1 = 5 and n2 = 13. Again, calculate the two sample variances and your pooled variance. c. Compare your answers from part...
1st*variability is: in control/out of control 2nd*no samples fall/one/two/more 3rd* in control/out of control The following...
1st*variability is: in
control/out of control
2nd*no samples fall/one/two/more
3rd* in control/out of control
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data show the temperature in degrees centigrade at five points in time during a manufacturing cycle. X Sample R 1 95.72 1.0 95.24 2 0.9 0.9 95.18 95.42 0.4 4 5 95.46 0.5 95.32 1.1 6 7 95.40 0.9 95.44 0.3 9 95.08 0.2 10 95.50 0.6 11 95.80 0.6 12...
To An independent-measures t hypothesis test is appropriate when the value for a is known a. b. the mean for a treated group of subjects is compared to a known population mean C. one sample is used to test a hypothesis about one population P there are two separate samples containing different subjects 17. One sample of n 5 scores has a variance of s 10 and a second sample of n= 10 scores has s pooled variance is computed...
1.
2.
3.
Assuming that other factors are held constant, which of the following would tend to increase the likelihood of rejecting the null hypothesis? Decrease the sample size Increase the sample mean difference Increase the sample variance None of the other 3 options would increase the likelihood Which of the following is the correct null hypothesis for a repeated-measures t test? MD 0 M1 M2 One sample of n=8 scores has a variance of s 6 and a second...
1st*variability is: in
control/out of control
2nd*no samples fall/one/two/more
3rd* in control/out of control
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data show the temperature in degrees centigrade at five points in time during a manufacturing cycle. X Sample R 1 95.72 1.0 95.24 2 0.9 0.9 95.18 95.42 0.4 4 5 95.46 0.5 95.32 1.1 6 7 95.40 0.9 95.44 0.3 9 95.08 0.2 10 95.50 0.6 11 95.80 0.6 12...
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