A sample of n =16 scores produces a t statistic of t = 2.00. If the sample is used to measure effect size with r2, what value will be obtained for r2
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- A sample of n =16 scores produces a t statistic of t = 2.00. If the sample is used to measure effect size with r2, what value will be obtained for r2
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- A sample of n = 16 scores produces a t statistic of t = 2.00. If the sample is used to measure effect size with r2, what value will be obtained for r2?Two samples, each with n = 9 scores, produce an independent-measures t statistic of t = 2.00. If the effect size is measured using r2, what is the value of r2?Assuming all other factors are held constant, if the df value for a two-tailed t-test with a = .05 were increased from df =6 to df = 20, what would happen to the critical values for t?
- If the df value for a two tailed test with alpha =0.05 were to increase from df=5 to df=22,what would happen to the critical values for t?In a test of H0: µ=75 against HA: µ<75, a sample of size 450 produces Z = -1.19 for the value of the test statistic. Thus the p-value is approximately equal to:If the test of H0: = 19 against Ha: ≠ 19 based on an SRS of 15 observations from a Normal populationproduces the statistic of t = –1.75. The P-value is
- If the value for a t-test is t= 4, then what would the Fvalue be if an ANOVA was used instead of a t-test? a. 2 b. 8 c. 16 d. Cannot be determined based on the information givenA researcher conducts an experiment comparing two methods of teaching young children to read. An older method is compared with a newer one, and the mean performance of the new method was found to be greater than that of the older method The results are reported as follows: t(120) = 2.10, p = .04, (d =.34). a. Are the results statistically significant?In a test of H0:p=0.4 against Ha:p≠0.4, a sample of size 100 produces z=1.28 for the value of the test statistic. Thus the p-value of the test is approximately equal to?
- Martin has found a correlation of r = .18 between the two variables of caffeine consumption and frontal lobe activity. This correlation is more likely to be statistically significant if: 1. increased level of confidence 2. increased an alpha level 0f 0.01 instead of 0.05 3. measure of caffeine consumption is categorical instead of continuous 4. used larger number of participantsA random sample of 54 students from Cabrillo College are selected from a normal population with mu equal to 20 and sigma equal to 5. After a treatment is administered to the students, the researcher calculated the sample mean to be 21. Is there enough evidence to conclude that the treatment had an effect at the 5% significance level? In step three, can we use the Critical Value Method? (a)Don't know (b)Cannot Determine (c)No (d)YesIf the value of Cronbach’s alpha is 0.07, it means ___________; a. Research instrument is not reliable b. Research instrument is internally consistent c. Data is reliable d. Data is internally consistent