Hypothesis Testing for Proportions

Is my coin biased? Has the percentage of voters in support of a politician changed? This video covers how to carry out a statistical test in situations such as these, when we are interested in measuring a proportion.

Stream the video without the embedded quiz questions by clicking on the video link below. Closed captions are available.

Notes on the video: Hypothesis Testing for Proportions

A point to consider for this video:

This video refers to a City of Toronto poll, carried out early in the term of Mayor Rob Ford, before some controversies overshadowed his term.

In this video, the P-values are often given as fractions. These P-values were calculated to many decimal places using statistical software, and then converted to an approximate fraction to emphasize how small they are.