What is the critical t value for a one sided test for alpha = .10? Imagine you are using a one-sample t test and your sample size is 15. A) 1.350 B) 1.345 C) 1.341 D) 1.337
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What is the critical t value for a one sided test for alpha = .10? Imagine you are using a one-sample t test and your
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- Dr. Stevenson reported the following in a journal: “F (4, 106) = 10.09, p = .04.” Should Dr. Stevenson state that there are significant differences among the variable means at a .01 alpha level?Dr. Romanoff reported the following in a journal: “F (5, 106) = 10.09, p = .04.” Should Dr. Romanoff state that there are significant differences among the variable means at a .05 alpha level?You obtain a t comp of .975 in a two sample independent t test with alpha at .05. Is it significant?
- A researcher obtained a result of t(9)=1.22, p>.05 for their study using a one sample t-test. Are the results significant using an alpha level of .05 and how many participants were in the group?A researcher obtains t=2.25 for a repeated measures study using a sample of n=10 participants. Based on this t value, what is the correct decision for a two- tail test at .05 and .01 alpha level?A researcher conducts a hypothesis test using a sample of n = 20 with M = 34 and s 2 = 36 from an unknown population. What is the df value for the t statistic?
- A researcher conducts a hypothesis test using a sample of n=20 with M =34 and s^2=36 from an unknown population.What is the df value for the t statistic?The following data were obtained from a two-factor independent-measures experiment with n=10 participants in each treatment condition. B1 B2 A1 M=4 T=50 SS=20 M=7 T=20 SS=28 A2 M=1 T=20 SS=12 M=4 T=30 SS-20 a. Calculate degrees of freedom and locate the critical region for each of the three tests (a=.05) b. Calculate the three F-ratios c. State the conclusion for each test.Find the t value that forms the boundary of the critical region in the right-hand tail for a one-tailed test with a alpha = .01 for each of the following sample sizes. a. n = 10b. n = 20c. n = 30
- CONSIDER that the data is UNCORRELATED use alpha .05. Provide the following: 1. CI of the F value 2. Statistical InterpretationConsider the following information on ultimate tensile strength (lb/in) for a sample of n = 4 hard zirconium copper wire specimens (from “Characterization Methods for Fine Copper Wire,” Wire J. Intl., Aug., 1997: 74-80): X (bar)= 76,831 s = 180 smallest xi = 76,683 largest xi = 77,048Determine the values of the two middle sample observations (and don’t do it by successive guessing!).Recently, the annual number of driver deaths per 100,000 for the selected age groups was as follows: Age Number of Driver Deaths per 100,000 16–19 38 20–24 36 25–34 24 35–54 20 55–74 18 75+ 28 Use the 4 steps of hypothesis testing to see if the prediction is significant with a criteria of alpha=.05 on the following data For each age group, pick the midpoint of the interval for the X value. (For the 75+ group, use 80.)