https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/idea-significance-tests/v/idea-behind-hypothesis-testing 2024-01-19T18:37:08.054557436Z Idea behind hypothesis testing The lesson explores hypothesis testing in statistics, demonstrating how varied outcomes from a test with a known accuracy rate can influence the acceptance or rejection of a hypothesis. This understanding is key to evaluating the reliability of statistical tests. video https://cdn.kastatic.org/ka_thumbnails_cache/af78c927-0baf-4729-917f-1ec9f39858ba_1280_720_base.png Idea behind hypothesis testing The lesson explores hypothesis testing in statistics, demonstrating how varied outcomes from a test with a known accuracy rate can influence the acceptance or rejection of a hypothesis. This understanding is key to evaluating the reliability of statistical tests. https://cdn.kastatic.org/ka-youtube-converted/dpGmVV0-4jc.mp4/dpGmVV0-4jc.mp4 469 Null and alternative hypotheses https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/idea-significance-tests/v/examples-of-null-and-alternative-hypotheses 2022-11-16T04:22:43.7414897Z Examples of null and alternative hypotheses The null and alternative hypotheses are both statements about the population that you are studying. The null hypothesis is often stated as the assumption that there is no change, no difference between two groups, or no relationship between two variables. The alternative hypothesis, on the other hand, is the statement that there is a change, difference, or relationship. video https://cdn.kastatic.org/googleusercontent/OXbA1gYSDWaeWJVj0aqC6yyI3SgIRJC2PDyjAx1Llw3ltRyN-jNIM4MH24rpc9TTHpxSXilMIY5m3JFjM8rjDkg Examples of null and alternative hypotheses The null and alternative hypotheses are both statements about the population that you are studying. The null hypothesis is often stated as the assumption that there is no change, no difference between two groups, or no relationship between two variables. The alternative hypothesis, on the other hand, is the statement that there is a change, difference, or relationship. https://cdn.kastatic.org/ka-youtube-converted/_3_6wjycJdk.mp4/_3_6wjycJdk.mp4 342 Null and alternative hypotheses https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/idea-significance-tests/e/writing-null-and-alternative-hypotheses-informal 2021-07-01T02:19:28Z Writing null and alternative hypotheses Practice writing null and alternative hypotheses for a significance test Jeff Dodds exercise