in the repeated measures t statistics the value for the estimated standard error in the numerator...
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in the repeated measures t statistics the value for the estimated standard error in the denominator is computed entirely from the sample data.
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Its formula is,
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in the repeated measures t statistics the value for the
estimated standard error in the numerator...
Consider the following data from a repeated-measures design. You want to use a repeated-measures t test...
Consider the following data from a repeated-measures design. You want to use a repeated-measures t test to test the null hypothesis H_0: mu_D = 0 (the null hypothesis states that the mean difference for the general population is zero). The data consist of five observations, each with two measurements, A and B, taken before and after a treatment. Assume the population of the differences in these measurements are normally distributed. Complete the following table by calculating the differences and the...
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...
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...
For the independent measures ttast, which of the following describes the estimated standard error of the...
For the independent measures ttast, which of the following describes the estimated standard error of the difference in sample means (whose symbolis )? The difference between the standard deviations of the two samples A weighted average of the two sample variances (weighted by the sample stres) An estimate of the standard distance between the difference in sample means (M. - Me) and the difference in the corresponding population means (Hi-Pa) The variance across all the data values when both samples...
4. Calculating the standard deviation and the estimated standard error for the sample mean difference Aa...
4. Calculating the standard deviation and the estimated standard error for the sample mean difference Aa Aa A researcher is interested in hamster wheel-running activity during the summer versus the winter. He suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. He records the activity of n = 16 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of the...
Aa Aa E 4. Calculating the standard deviation and the estimated standard error for the sample...
Aa Aa E 4. Calculating the standard deviation and the estimated standard error for the sample mean difference A researcher is interested in hamster wheel-running activity during the summer versus the winter. He suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. He records the activity of n = 25 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of...
A repeated-measures test usually is more likely to detect a real treatment effect than an independent-measures...
A repeated-measures test usually is more likely to detect a real treatment effect than an independent-measures test because the repeated-measures design typically has a smaller variance and a smaller estimated standard error. True or False?
ssignment #5 12. Measures of effect size for the repeated-measures t A Aa Previous studies have...
ssignment #5 12. Measures of effect size for the repeated-measures t A Aa Previous studies have shown that playing video games can increase visual perception abilities on tasks presented in the gaming zone of the screen (within 5 degrees of the center). A graduate student is Interested in whether playing video games increases peripheral visual perception abilities or decrsases attantion to peripheral regions because of foaus on the gaming zone. For her study, she selects a random sample of 64...
For a repeated-measures study comparing two treatments with a sample of n = 9 participants, the...
For a repeated-measures study comparing two treatments with a sample of n = 9 participants, the difference scores have a mean of Mo = 4.90 with SS = 18. What is the estimated standard error for the sample mean difference? 1 OOOO 0.5 0.08
Aa Aa 1. In a repeated-measures analysis of variance... In a repeated-measures analysis of variance, how...
Aa Aa 1. In a repeated-measures analysis of variance... In a repeated-measures analysis of variance, how does the magnitude of the mean differences from one treatment to another contribute to the F-rata? The mean differences add to the numerator of the F-ratio. The mean differences add to both the numerator and the denominator of the Fratio. The mean differences add to the denominator of the F-ratio. The mean differences are subtracted from the numerator of the F-ratio.
Consider the following data from a repeated-measures design. You want to use a repeated-measures t test to test the null hypothesis H_0: mu_D = 0 (the null hypothesis states that the mean difference for the general population is zero). The data consist of five observations, each with two measurements, A and B, taken before and after a treatment. Assume the population of the differences in these measurements are normally distributed. Complete the following table by calculating the differences and the...
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...
For the independent measures ttast, which of the following describes the estimated standard error of the difference in sample means (whose symbolis )? The difference between the standard deviations of the two samples A weighted average of the two sample variances (weighted by the sample stres) An estimate of the standard distance between the difference in sample means (M. - Me) and the difference in the corresponding population means (Hi-Pa) The variance across all the data values when both samples...
4. Calculating the standard deviation and the estimated standard error for the sample mean difference Aa Aa A researcher is interested in hamster wheel-running activity during the summer versus the winter. He suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. He records the activity of n = 16 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of the...
Aa Aa E 4. Calculating the standard deviation and the estimated standard error for the sample mean difference A researcher is interested in hamster wheel-running activity during the summer versus the winter. He suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. He records the activity of n = 25 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of...
ssignment #5 12. Measures of effect size for the repeated-measures t A Aa Previous studies have shown that playing video games can increase visual perception abilities on tasks presented in the gaming zone of the screen (within 5 degrees of the center). A graduate student is Interested in whether playing video games increases peripheral visual perception abilities or decrsases attantion to peripheral regions because of foaus on the gaming zone. For her study, she selects a random sample of 64...
For a repeated-measures study comparing two treatments with a sample of n = 9 participants, the difference scores have a mean of Mo = 4.90 with SS = 18. What is the estimated standard error for the sample mean difference? 1 OOOO 0.5 0.08
Aa Aa 1. In a repeated-measures analysis of variance... In a repeated-measures analysis of variance, how does the magnitude of the mean differences from one treatment to another contribute to the F-rata? The mean differences add to the numerator of the F-ratio. The mean differences add to both the numerator and the denominator of the Fratio. The mean differences add to the denominator of the F-ratio. The mean differences are subtracted from the numerator of the F-ratio.
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