https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/two-sample-t-test-means/v/alternative-hypothesis-for-2-sample-t-test 2022-10-07T02:10:10.749739204Z Hypotheses for a two-sample t test Example of how to write hypotheses for a two-sample t test, and how to distinguish between paired and two-sample comparisons between means. video https://cdn.kastatic.org/googleusercontent/tLeKgY003UR7SmK3CAghd_Ey4Yv2ahwIl5g1bQ9N3Gn05zwiskOtAOxi5ATsdZD8GMrbNuO7lT6MaK6NbavGBSyq Hypotheses for a two-sample t test Example of how to write hypotheses for a two-sample t test, and how to distinguish between paired and two-sample comparisons between means. https://cdn.kastatic.org/ka-youtube-converted/8CJ-RsoYbg0.mp4/8CJ-RsoYbg0.mp4 240 Two-sample t-tests https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/two-sample-t-test-means/v/example-of-hypotheses-for-paired-and-2-sample-t-tests 2022-10-07T02:10:10.749739204Z Example of hypotheses for paired and two-sample t tests Example of hypotheses for paired and two-sample t tests video https://cdn.kastatic.org/googleusercontent/fy-R_76ajzSrytevQfoLd03ySM4iFRijBsWNteNufDJPntAP8qfMjqwthT-dBmt3pWXu4aL8rocvqUPj7c_iqbiB Example of hypotheses for paired and two-sample t tests Example of hypotheses for paired and two-sample t tests https://cdn.kastatic.org/ka-youtube-converted/X0gIJUXz6jc.mp4/X0gIJUXz6jc.mp4 229 Two-sample t-tests https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/two-sample-t-test-means/e/hypotheses-two-sample-t-test-means 2021-07-01T02:19:30Z Writing hypotheses to test the difference of means Practice writing the null and alternative hypothesis in a two-sample t test for the difference of means. Jeff Dodds exercise https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/two-sample-t-test-means/v/two-sample-t-test-for-difference-of-means 2022-11-16T04:22:43.7414897Z Two-sample t test for difference of means Given data from two samples, we can do a signficance test to compare the sample means with a test statistic and p-value, and determine if there is enough evidence to suggest a difference between the two population means. video https://cdn.kastatic.org/googleusercontent/VW3GWZn8wGzFe5te6gZZ_OP9L1pmHxOGZLQM00JbYyQZcpNOB6e9BiWz4Z9HLZ0PZ9J4l07JxZfAqY8-7vUuydFW Two-sample t test for difference of means Given data from two samples, we can do a signficance test to compare the sample means with a test statistic and p-value, and determine if there is enough evidence to suggest a difference between the two population means. https://cdn.kastatic.org/ka-youtube-converted/NkGvw18zlGQ.mp4/NkGvw18zlGQ.mp4 416 Two-sample t-tests https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/two-sample-t-test-means/e/test-statistic-p-value-two-sample-t-test-means 2021-07-01T02:19:27Z Test statistic in a two-sample t test Calculate the test statistic in a two sample t test for the difference of means. Jeff Dodds exercise https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/two-sample-t-test-means/e/p-value-in-a-two-sample-t-test-for-the-difference-of-means 2021-07-01T02:19:28Z P-value in a two-sample t test Practice calculating the P-value in a two-sample t test for the difference of means Jeff Dodds exercise https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/two-sample-t-test-means/v/conclusion-for-2-sample-t-test-from-p-value 2022-10-07T02:10:10.749739204Z Conclusion for a two-sample t test using a P-value Given results of a two-sample t test, compare the P-value to the significance level to make a conclusion in context about the difference between two means. video https://cdn.kastatic.org/ka_thumbnails_cache/ee16f748-d7c7-4820-8245-b4ac3fbc21a8_1280_720_base.png Conclusion for a two-sample t test using a P-value Given results of a two-sample t test, compare the P-value to the significance level to make a conclusion in context about the difference between two means. https://cdn.kastatic.org/ka-youtube-converted/ogFLbvKru8A.mp4/ogFLbvKru8A.mp4 149 Two-sample t-tests https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/two-sample-t-test-means/v/conclusion-for-2-sample-t-test-from-confidence-interval 2022-10-07T02:10:10.749739204Z Conclusion for a two-sample t test using a confidence interval Given a confidence interval estimating the difference between two means, make a conclusion in a significance test about the difference between those means. video https://cdn.kastatic.org/googleusercontent/-V7KRDc1l9slyOCxik6TChlgd7NJD_LW2G0CPqFJDFGztoJILl3xDsY-f3GNsmXiZLlXQU03Kj1uCPSq8VJYhFU Conclusion for a two-sample t test using a confidence interval Given a confidence interval estimating the difference between two means, make a conclusion in a significance test about the difference between those means. https://cdn.kastatic.org/ka-youtube-converted/iJr9PpY3PjM.mp4/iJr9PpY3PjM.mp4 226 Two-sample t-tests https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/two-sample-t-test-means/e/conclusions-two-sample-t-test-means 2021-07-01T02:19:31Z Making conclusions about the difference of means Practice using test statistics, P-values, and confidence intervals to make conclusions in a two-sample test for the difference of means. Jeff Dodds exercise