https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/one-sample-z-test-proportion/v/constructing-hypotheses-for-a-significance-test 2022-10-07T00:58:19.561984208Z Constructing hypotheses for a significance test about a proportion Constructing hypotheses for a significance test about a proportion video https://cdn.kastatic.org/ka_thumbnails_cache/39853782-262b-412b-8291-ce5b0c583aff_1280_720_base.png Constructing hypotheses for a significance test about a proportion Constructing hypotheses for a significance test about a proportion https://cdn.kastatic.org/ka-youtube-converted/8MJvK26PwSo.mp4/8MJvK26PwSo.mp4 256 One-proportion z-tests https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/one-sample-z-test-proportion/e/writing-hypotheses-one-sample-z-test-proportion 2021-07-01T02:19:29Z Writing hypotheses for a test about a proportion Practice writing the null and alternative hypotheses in a one sample z test for a proportion Jeff Dodds exercise https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/one-sample-z-test-proportion/v/conditions-for-a-z-test-about-a-proportion 2022-10-07T00:58:19.561984208Z Conditions for a z test about a proportion Examples showing how to check whether or not the conditions have been met for doing a z test about a proportion. video https://cdn.kastatic.org/ka_thumbnails_cache/98bc0a31-83af-4da6-bcd7-71447262c2d4_1280_720_base.png Conditions for a z test about a proportion Examples showing how to check whether or not the conditions have been met for doing a z test about a proportion. https://cdn.kastatic.org/ka-youtube-converted/5JlJ4Qfk8g4.mp4/5JlJ4Qfk8g4.mp4 333 One-proportion z-tests https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/one-sample-z-test-proportion/e/checking-conditions-one-sample-z-test-proportion 2023-06-09T19:33:20.614181298Z Conditions for a z test about a proportion Check whether or not the the conditions have been met for a one sample z test for a proportion Jeff Dodds exercise https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/xfb5d8e68:carrying-out-test-proportion/v/calculating-a-z-statistic-in-a-significance-test 2022-10-07T00:58:19.561984208Z Calculating a z statistic in a test about a proportion Calculating a z statistic in a one-sample z test about a proportion video https://cdn.kastatic.org/ka_thumbnails_cache/3dffb5f4-3a25-4626-a915-3ad81f09647c_1280_720_base.png Calculating a z statistic in a test about a proportion Calculating a z statistic in a one-sample z test about a proportion https://cdn.kastatic.org/ka-youtube-converted/DfpFfIdwcIo.mp4/DfpFfIdwcIo.mp4 291 One-proportion z-tests https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/xfb5d8e68:carrying-out-test-proportion/e/test-stat-one-sample-z-test-p 2021-07-01T02:19:29Z Calculating the test statistic in a z test for a proportion Practice using sample data to calculate the test statistic in a one-sample z test for a proportion. Jeff Dodds exercise https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/xfb5d8e68:carrying-out-test-proportion/v/calculating-p-value-from-z-table 2022-11-16T04:22:43.7414897Z Calculating a P-value given a z statistic In a significance test about a population proportion, we first calculate a test statistic based on our sample results. We then calculate a p-value based on that test statistic using a normal distribution. video https://cdn.kastatic.org/ka_thumbnails_cache/d1104651-5ea6-4326-9445-0c28e3ea84d4_1280_720_base.png Calculating a P-value given a z statistic In a significance test about a population proportion, we first calculate a test statistic based on our sample results. We then calculate a p-value based on that test statistic using a normal distribution. https://cdn.kastatic.org/ka-youtube-converted/NNpv-n_Hbvc.mp4/NNpv-n_Hbvc.mp4 327 One-proportion z-tests https://www.khanacademy.org/math/statistics-tx/x2d551a71b7f6c307:unit-8-inference-for-categorical-data/x2d551a71b7f6c307:one-proportion-z-tests/e/calculating-test-statistic-p-value-one-sample-z-test-proportion 2026-06-23T13:38:27.041531116Z Calculating the test statistic and p-value in a one-sample z test for a proportion Calculate the test statistic and p-value in a one sample z test for a proportion given sample data. Jeff Dodds exercise https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/xfb5d8e68:concluding-test-proportion/v/comparing-p-value-to-significance-level-example 2022-10-07T00:58:19.561984208Z Making conclusions in a test about a proportion Example of how to make a conclusion in a test about a proportion video https://cdn.kastatic.org/ka_thumbnails_cache/c3b24e1a-e241-4c34-9486-422ba2a5da2e_1280_720_base.png Making conclusions in a test about a proportion Example of how to make a conclusion in a test about a proportion https://cdn.kastatic.org/ka-youtube-converted/RcjZwZJO5qo.mp4/RcjZwZJO5qo.mp4 314 One-proportion z-tests https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/xfb5d8e68:concluding-test-proportion/e/conclusions-one-sample-z-test-proportion 2021-07-01T02:19:29Z Making conclusions in a z test for a proportion Make conclusions in a one-sample z test for a proportion based on the P-value and significance level. Jeff Dodds exercise