If other factors are held constant, explain how each of the following influences the value of...
- If other factors are held constant, explain how each of the following influences the value of the independent-measures t test?
a. Increasing the number of people in each sample
b. Increasing the size of variance for each sample
c. Increasing the difference between the two sample means
Homework Answers
(a) With the increase in the number of people in each sample (i.e with the increase in sample size), the value of the t-statistic of the independent measures t-test increases and hence the corresponding p value decreases
(b) With the increase in size of variance for each sample, the value of the t-statistic of the independent measures t-test decreases and hence the corresponding p value increases
(c) With the increase in difference between the two sample means, the value of the t-statistic of the independent measures t-test increases and hence the corresponding p value decreases
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If other factors are held constant, explain how each of the
following influences the value of...
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...
The value of t-score in a hypothesis testing is influenced by a variety of factors. Assuming...
The value of t-score in a hypothesis testing is influenced by a variety of factors. Assuming that all other variables are held constant, explain how the value of t is influenced by each of the following: (1.5) Increasing the difference between sample mean and the original population mean. Increasing the variability of scores. c. Increasing the number of people in the sample.
Several factors influence the value obtained for the independent-measures t statistic. Some factors affect the numerator...
Several factors influence the value obtained for the independent-measures t statistic. Some factors affect the numerator of the t statistic and others influence the size of the estimated standard error in the denominator. For each of the following, indicate whether the factor influences the numerator or denominator of the t statistic and determine whether the effect would be to increase the value of t (farther from zero) or decrease the value of t (closer to zero). In each case, assume...
24. Assuming that other factors are held constant, which of the following would tend to increase...
24. Assuming that other factors are held constant, which of the following would tend to increase the likelihood of rejecting the null hypothesis? a. Decrease the sample size b. Increase the sample mean difference c. Increase the sample variance d. None of the other 3 options would increase the likelihood
25 por QUESTION 4 Assuming that other factors are held constant, which of the following sets...
25 por QUESTION 4 Assuming that other factors are held constant, which of the following sets of data is most likely to produce a statistically significant value for the repeated measures t statistici n 15 and MD-2 On-15 and MD - 4 On - 30 and MD - 2 On - 30 and MD - 4 25 QUESTION 5 For which of the following situations would a repeated-measures research design be appropriate? comparing mathematical skills for girls versus boys at...
If other factors are held constant, which of the following sets of data is most likely to produce...
If other factors are held constant, which of the following sets of data is most likely to produce a significant value for the repeated-measures t statistic? n = 15 and SS = 10 for the difference scores n = 15 and SS = 100 for the difference scores n = 30 and SS = 10 for the difference scores n = 30 and SS = 100 for the difference scores
answer all please In an analysis of variance, the MS between and MS within represent the...
answer all please
In an analysis of variance, the MS between and MS within represent the means of the squared variability between and within conditions. True • False QUESTION 14 If an analysis of variance produces SS between 30 and MS between 10, then the ANOVA is comparing three treatment conditions. True False QUESTION 15 Compared to an independent measures design a repeated measures study is more likely to find a statistically significant effect because it reduces the contribution of...
For the independent-measures t test, which of the following describes the estimated standard error of M1 - M2 (whose sy...
For the independent-measures t test, which of the following describes the estimated standard error of M1 - M2 (whose symbol is )? O The variance across all the data values when both samples are pooled together O A weighted average of the two sample variances (weighted by the sample sizes) O The difference between the standard deviations of the two samples O An estimate of the standard distance between the difference in sample means (M, - M2) and the difference...
•If the other unobserved factors are held constant, the change in ?u is then 0, ∆?=0∆u=0,...
•If the other unobserved factors are held constant, the change
in ?u is then 0, ∆?=0∆u=0,
then
∆?=?1∆?∆y=β_1
∆x
could someone please explain what this
means? it is easier to see on the image not text
If the other unobserved factors are held constant, the change in u is then 0, Au - 0, thern x has a linear effect on y . β1 is therefore the slope parameter in the relationship between y and x yield-Bo Bifertilizer+u >B1measures the...
10) (4) Several factors influence the size of the F-ratio (that is, Fos). Some factors influence...
10) (4) Several factors influence the size of the F-ratio (that is, Fos). Some factors influence the numerator and others influence the denominator. For each of the following, indicate (by circling your choice) whether the factor influences the numerator denominator of the F-ratio and determine whether the effect would be to increase the value of F (farther from zero) or decrease the value of F (closer to zero). In each case, assume that all other factors remain constant. a. (2)...
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...
24. Assuming that other factors are held constant, which of the following would tend to increase the likelihood of rejecting the null hypothesis? a. Decrease the sample size b. Increase the sample mean difference c. Increase the sample variance d. None of the other 3 options would increase the likelihood
25 por QUESTION 4 Assuming that other factors are held constant, which of the following sets of data is most likely to produce a statistically significant value for the repeated measures t statistici n 15 and MD-2 On-15 and MD - 4 On - 30 and MD - 2 On - 30 and MD - 4 25 QUESTION 5 For which of the following situations would a repeated-measures research design be appropriate? comparing mathematical skills for girls versus boys at...
answer all please
In an analysis of variance, the MS between and MS within represent the means of the squared variability between and within conditions. True • False QUESTION 14 If an analysis of variance produces SS between 30 and MS between 10, then the ANOVA is comparing three treatment conditions. True False QUESTION 15 Compared to an independent measures design a repeated measures study is more likely to find a statistically significant effect because it reduces the contribution of...
For the independent-measures t test, which of the following describes the estimated standard error of M1 - M2 (whose symbol is )? O The variance across all the data values when both samples are pooled together O A weighted average of the two sample variances (weighted by the sample sizes) O The difference between the standard deviations of the two samples O An estimate of the standard distance between the difference in sample means (M, - M2) and the difference...
•If the other unobserved factors are held constant, the change
in ?u is then 0, ∆?=0∆u=0,
then
∆?=?1∆?∆y=β_1
∆x
could someone please explain what this
means? it is easier to see on the image not text
If the other unobserved factors are held constant, the change in u is then 0, Au - 0, thern x has a linear effect on y . β1 is therefore the slope parameter in the relationship between y and x yield-Bo Bifertilizer+u >B1measures the...
10) (4) Several factors influence the size of the F-ratio (that is, Fos). Some factors influence the numerator and others influence the denominator. For each of the following, indicate (by circling your choice) whether the factor influences the numerator denominator of the F-ratio and determine whether the effect would be to increase the value of F (farther from zero) or decrease the value of F (closer to zero). In each case, assume that all other factors remain constant. a. (2)...
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