About this document
수통 EX 4 6 8 by watname000 is a document available to read on EtoBox.
The document outlines a hypothesis test to determine if an advertising campaign increased seat belt usage, with a null hypothesis of p = 0.14 and an alternative hypothesis of p > 0.14. Using a sample size of 590 and 104 successes, the test statistic was calculated as Z ≈ 2.541, which falls into the critical region for α = 0.01. The p-value of 0.0055 indicates statistical significance, leading to the conclusion that the campaign was successful in increasing seat belt usage.
- Author
- watname000
- Language
- EN