The results of a one-sample t test were t (18) = 2.11, p < 0.05. In this example, the sample size is (report as a whole number):
Given that, for one-tailed test, t(18) = 2.11
and p-value is less than 0.05 ( i.e. p < 0.05)
Here, degrees of freedom = n - 1 = 18
So, n = 18 + 1 = 19
Therefore, required sample size is 19
The results of a one-sample t test were t (18) = 2.11, p < 0.05. In...
The results of a single-sample t test are reported as t(44) = −3.35, p < .001, d = −0.50. Describe the effect size for this study.
Use the t-distribution and the sample results to complete the test of the hypotheses. Use a 5% significance level. Assume the results come from a random sample, and if the sample size is small, assume the underlying distribution is relatively normal. Test H0 : μ=10 vs Ha : μ>10 using the sample results x¯=13.2, s=8.7, with n=12. test statistic = p-value =
PLEASE help ?? A researcher conducted a single sample t-test on results of an experiment with n = 18 participants and the computed t = -2.28. What is the correct conclusion from this experiment if p < 0.05, 2-tails test is used for hypothesis testing? O A. The researcher failed to reject the null hypothesis and concluded that there is a significant treatment effect. O B. The researcher rejected the null hypothesis and concluded that there is a significant treatment...
You wish to test the following claim at a significance level of α=0.05 H0:p=0.65 H1:p≠0.65 You obtain a sample of size n=684 in which there are 436 successful observations. What is the test statistic for this sample? (Report answer accurate to 3 decimal places.)
QUESTION 20 How would we report the following results of a t-test? One-Sample Test Test Value = 7 95% Confidence interval of the Mean Difference Sig (2-tailed) Difference Lower Upper Digitspan 2 364 68 021 542029 8 457 9.9949 t(68) = 2.364, p = .021 t(67) = 2.364, p = .021 t(68) = 5.42, p = .021 t(68) = .021, p = 2.364 QUESTION 21 Fill in the missing numbers in the ANOVA table below: ANOVA Source of Variation S...
Use the t-distribution and the sample results to complete the test of the hypotheses. Use a 5% significance level. Assume the results come from a random sample, and if the sample size is small, assume the underlying distribution is relatively normal. Test H0 : μ=4 vs Ha : μ≠4 using the sample results x¯=4.8, s=2.3, with n=15. ME: 99% confidence interval
Consider the following hypothesis test: H0: μ = 18 Ha: μ ≠ 18 A sample of 48 provided a sample mean x = 17 and a sample standard deviation s = 4.9. a. Compute the value of the test statistic (to three decimal places.) b. Use the t distribution table (Table 2 in Appendix B) to compute a range for the p-value. (to two decimal places) p-value is between is c. At α = .05, what is your conclusion? p-value...
The one-sample t-statistic for a test of Hou = 42 versus H1:4 < 42 based on n = 15 observations has the value t= -1.343, where Ho and H are the null and alternative hypotheses, respectively. The sample size is denoted by n. Use this t-table to determine which two P-values bracket the P-value of the test. Report your answers in decimal form as listed in the t-table. K P-value of the test <
The one-sample t statistic from a sample of n = 21 observations for the two-sided test of H0: μ = 60, Ha: μ ≠ 60 has the value t = –1.98. Based on this information: we would reject the null hypothesis at α = 0.05. All of the answers are correct. 0.025 < P-value < 0.05. we would reject the null hypothesis at α = 0.10
Question Which of the following is true about the one sample z-test and one sample t-test: A. for a t-test, the population mean and standard deviation are needed for a t-test only the sample mean is needed. for a z-test the population mean and standard deviation are needed. The z and t-tests are identical except for the size of the sample used. The z and t-tests are identical in terms of the amount of information needed. B. C. D. E....