In a hypothesis test, if an independent-measures t statistic has a value zero, then __________.
What is the pooled variance for the following two samples?
Sample 1: n = 6 and SS
= 56
Sample 2: n = 4 and SS = 40
In a hypothesis test, if an independent-measures t statistic has a value zero, then __________. What...
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...
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...
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...
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...
Calculate the pooled variance (as in an independent-Measures t test for the following sample. Round to two decimal places. Treatment Treatment A B 12 8 8 9 12 15 16 17 4 5 17 18 17 13 6 3
Two samples, each with n = 11, produce an independent-measures t statistic of t = -2.78. Which of the following decisions is justified for a two-tailed hypothesis test with α = .01? Select one: a. Both are correct. b. Fail to reject H0 c. Reject H0 d. There is not information available to answer this question.
eBook Video Consider the hypothesis test below. Ho :Pi-Pr S Ha:P-P> The following results are for independent samples taken from the two populations. Sample 1 11-100 -0.25 Sample 2 2300 = 0.11 Use pooled estimator of p. a. What is the value of the test statistic (to 2 decimals)? b. What is the p-value (to 4 decimals)? c. With a.05, what is your hypothesis testing conclusion? Select your answer
12. What is the average value expected for the independent-measures t statistic if the null hypothesis is true? a. O b. 1 C. 41 d. Mi-M2 13. For an ANOVA comparing three treatment conditions, what is stated by the alternative hypothesis (HA)? a. There are no differences between any of the population means b. At least one of the three populations means is different from another mean C. All three of the population means are different from each other d....
the alternative hypothesis for an independent measures t test states a. there is no mean difference between the 2 populations being compared b. there is no mean difference between the 2 samples being compared c. there is a none zero mean difference between the 2 populations being compared d. there is a none zero mean difference between the 2 samples being compared
(Harder question): Show that the two sample t-test statistic squared is equal to the single-factor ANOVA F statistic when there are two levels. For simplicity, assume equal sample size of n in each of the two groups RECALL: Two sided, two independent sample pooled t-test tests the following hypotheses: The test statistic is: VEA where yi and ỹ2 are the sample means in group 1 and 2, respectively. The pooled variance is given by where s and s3 are the...