What would be the minimum sample size for an independent samples t-test with a small effect size where eta squared = .01, alpha = .05, and statis
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A: Given: Sample size (n)=25 Level of significance α=0.05%
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A: According to policy we supposed to answer first three part kindly repost for remaining.
Q: Suppose you carry out a significance test of H0: μ = 8 versus Ha: μ > 8 based on sample size n = 25…
A: Given that µ = 8 n = 25 df = n-1 = 25-1= 24
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A: Mean = 12 N= 11 df = N-1 = 10 t = 1.415
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Q: If the critical value of t is 2.303, and the sample size is 13. Find the significance level (a).
A: we want to find value of alpha
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A: It is given that the critical t score is -2.33 and the observed t value is -2.01.
Q: Which study will require a larger sample size, one done with 80% power or 90% power when alpha (type…
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Q: In a right-tailed test with known population standard deviation, the sample size was 8. At α = 0.05,…
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Q: The results of a study that used an independent samples t-test was t(28) = 2.14, p = .01. Based on…
A: t(28) means that degree of freedom = 28 Now, degree of freedom for a t-test one sample case = n-1.
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Q: 94, and s The test statistic is 10.20408 The smaller critical number is The bigger critical number…
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A: Sample size n=2.201 Significance level α=0.05 The degrees of freedom n-1=12-1=11
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A: Given that Sample size is 25 and the observations are identically independently distributed. The…
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A: Given information is A sample has n = 16 scores, a mean of M = 45 and has an estimated standard…
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Q: For a sample of n = 11 scores with SS = 440. What is the sample variance and the estimated standard…
A: Sample Variance s2 = SS/n-1 Estimated standard error sM = s/sqrt(n).
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Q: If I have a sample of 20 people what is my T-threshold for a two-tail test and an alpha of 0.1…
A: Given: Sample size (n)=20 Level of significance α=0.1%=0.001 Test is two tailed.
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Q: What is tcrit for a one sample, one tailed t-test, with n=13 and α=0.05
A: given data, one- tailed t- test n=13df=13-1=12α=0.05t-critical value=?
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A: The population mean is μ and the test is left tailed.
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- is it true that the minimum sample size for an independent samples t-test with a medium effect size where eta squared = .05, alpha = .05, and statistical power = .80 would be 76 participants?Are Republicans less likely than Democrats to display the American flag in front of their residence on the Fourth of July? 425 of the 659 Republicans surveyed display the flag on the Fourth of July and 538 of the 784 Democrats surveyed display the flag on the Fourth of July. What can be concluded at the αα = 0.01 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for the difference between two dependent population means z-test for the difference between two population proportions t-test for a population mean t-test for the difference between two independent population means The null and alternative hypotheses would be: H0:H0: Select an answer p1 μ1 Select an answer > = ≠ < Select an answer p2 μ2 (please enter a decimal) H1:H1: Select an answer p1 μ1 Select an answer > ≠ = < Select an answer μ2 p2 (Please enter a decimal) The test statistic ? z t = (please show your answer to 3 decimal…You wish to test the following claim (HaHa) at a significance level of α=0.002α=0.002. Ho:μ1=μ2Ho:μ1=μ2 Ha:μ1>μ2Ha:μ1>μ2 You obtain the following two samples of data. What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? For this calculation, use the degrees of freedom reported from the technology you are using. (Report answer accurate to four decimal places.)p-value = The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to reject the null
- Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.6 parts/million (ppm). A researcher believes that the current ozone level is not at a normal level. The mean of 1313 samples is 7.2 ppm with a variance of 0.49 Assume the population is normally distributed. A level of significance of 0.02 will be used. Make the decision to reject or fail to reject the null hypothesis.Using the t-table, the critical values for a two-tailed test with an α = 0.01 for a sample size of 15 are ±2.947.a) Justify the choice of test procedure. b) Can a student's t-test on paired samples be used as a test procedure for the given problem? Why or why not? c) Give the appropriate conclusion at 5% level of significance: At alpha = 0.05, ______.
- In a random sample of size 36 we observe a sample mean of 25 and a variance of 144. If we test the hypotheses below with a significance level of 0.05. Ho: µ = 20 HẠ :4 > 20 what will be the calculated test statistic?Getting an adequate amount of sleep can improve a variety of physiological functions, and it is known that the average number of hours that people sleep each night is normally distributed. A psychiatrist or a major research center takes an SRS of 25 emotionally disturbed patients and records the average amount of sleep that each gets on a typical night. He summarizes the data and finds that Xbar=6.90 and S= 0.878. What sample size would the researcher need to use in order to decrease the margin of error of a 95% confidence interval to +-0.20 hours?You are conducting a study to see if the accuracy rate for fingerprint identification is significantly different from 0.23. You use a significance level of α=0.01 H0:p=0.23 H1:p≠0.23You obtain a sample of size n=228n=228 in which there are 70 successes.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... The sample data support the claim that the accuracy rate for fingerprint identification is different from 0.23. There is not sufficient sample evidence to support the claim that the accuracy rate for fingerprint identification is different from 0.23.
- A repeated-measures ANOVA was calculated with df = 1, 14. If the same data were analyzed with a repeated-measures t test, how many degrees of freedom would be used with the t statistic?An independent measures design study with n= 16 in each sample produces a sample meam difference of 4 points and a pooled variance of 24. Wht is the value of t statistic?If a researcher wants to conduct a two-tailed single sample + test with data from 30 participants and an alpha level of 0.05, what is the correct critical value? a. 2.043 b. 1699 c. 2045 d. 1.698
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