State whether each of the following related samples t-tests is significant for a two-tailed test at a 0.05 level of significance. (a) t(30) = 3.510 Yes, the test is significant. No, the test is not significant. (b) t(16) = 2.565 Yes, the test is significant. No, the test is not significant. (c) t(12) = 2.046 Yes, the test is significant. No, the test is not significant. (d) t(60) = 1.975 Yes, the test is significant. No, the test is not significant.
State whether each of the following related samples t-tests is significant for a two-tailed test at...
23. State whether each of the following related-samples t tests is significant for a two-tailed test at a .05 level of significance. t(30) = 3.220 t(12) = 2.346 t(18) = 2.034 t(60) = 1.985
For each example, state whether the one-sample, the two-independent-sample, or the related samples t-test is most appropriate. If it is a related samples t-test, indicate whether the test is a repeated measures design or a matched-pairs design. 1) A researcher matches right-handed and left-handed siblings to test whether right-handed siblings express greater emotional intelligence than left-handed siblings. A. one-sample t-test B. two-independent sample t-test C. related samples t-test using the repeated measures design D. related samples t-test using the matched-pairs...
Using the following data set, conduct an independent samples t-test. Use a= 0.05 and a two-tailed test. Sample 1: 14, 14, 13, 13, 10, 12, 14, 15, 17 Sample 2: 15, 11, 15, 13, 14, 13, 14, 14, 15 1. hypotheses: null and alternative 2. t-critical value; shade of regions of rejection 3. t-obtain 4. conclusion 5. decide if significant 6. compute for confidence interval is significant
Considering the differences between a one-tailed and two-tailed independent samples t-test, using the same data set, which of the following is NOT true: A. the calculated t statistic will be the same for both B. an F-test of variances is required in both cases C. the d.f. will be the same for both tests D. we should select different values for these tests
Hypothesis Problems For the following hypothesis tests: a. State the null (Ho) and alternative (Hi) hypotheses b. State the type of test (right-tailed, left-tailed, or two-tailed) c. State the multiplier for an a (level of significance) of .05. The Chamber of Commerce states that only 15% of Boston tourists stay more than 2 days. A new chamber employee feels that the percentage staying more than 2 days is greater than 15%, and plans to sample a set of tourists to...
summary statistics are given for independent simple random samples from two populations. Use the nonpooled t-test to conduct the required hypothesis test. 1 = 72.8, s 1 = 10.9, n 1 = 16, 2 = 69.9, s 2 = 8.2, n 2 = 12 Perform a right-tailed hypothesis test using a significance level of α = 0.05. Test statistic: t = 2.635 Reject H0 Test statistic: t = 2.635 Reject H0 Test statistic: t = 0.803 Do not reject H0 Test...
idk if its a left tailed or right tailed z test, or a left
tailed t test, or a two tailed z test. Im also having trouble
finding the p value
A political campaign is interested in whether city 1 has more support for raising the minimum wage than city 2. Polls were conducted in the two largest cities in the state about raising the minimum wage. In city 1, a poll of 800 randomly selected voters found that 220...
Section l: Scenarios (20 pts) Read the following scenarios and state the appropriate test to analyze the data from the list of 7 tests below. Two-way ANOVA One-sample t-test Independent-samples t-test Paired-samples t-test One-way ANOVA* Repeated-measures ANOVA Correlation 1.5 Cholesterol (2.0 pts): A study is conducted to examine the impact of a new medicine on the cholesterol level in adults. It is also hypothesized that the new medicine may work differently for women and men. Therefore, you recruit 20 women...
3 and 4
3. Indicate df for the following statistical tests: a. One sample t test b. Independent samples t test (same N's in both groups) c. Independent samples t test (different N's) d. Paired samples t test e. Testing whether correlation coefficient is different from 0. 4. Assume you have two independent samples that you wish to compare. One sample has an N of 14 and the other has an N of 10. For a = .05, two tailed...
The shaded regions in each of the following -distribution curves represent the significance levels for left-tailed, two- tailed, and right-tailed r-tests Match the appropriate significance level, a, and degrees of freedom, df, to each graph AA 1.812 -1.691 1.691 1.691 1.812 1812 Answer Bank df 34, a0.10 df 10, a 0.10 df 34, a 0.05 df 10, a 0.05