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- Collaborative statistics
- The chi-square distribution
- Practice 3: test of a single
This module provides a practice on Chi-Square Distribution as a part of Elementary Statistics textbook.
Student learning outcomes
- The student will conduct a test of a single variance.
Given
Suppose an airline claims that its flights are consistently on time with an average delay of at most 15 minutes. It claims that the average delay is so consistent that the variance is no more than 150 minutes. Doubting the consistency part of the claim, a disgruntled traveler calculates the delays for his next 25 flights. The average delay for those 25 flights is 22 minutes with a standard deviation of 15 minutes.
Sample variance
Hypothesis test
Perform a hypothesis test on the consistency part of the claim.
Discussion questions
Questions & Answers
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Source:
OpenStax, Collaborative statistics. OpenStax CNX. Jul 03, 2012 Download for free at http://cnx.org/content/col10522/1.40
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