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Test of association using Chi-Square test for independence

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What is the calculation of 450 participants included in a study? 150 cases who had been in an accident and 300 controls who had not. Of the 150 cases, 70 reported having taken a driver's education class. Of the 300 controls, 170 reported having taken a driver's education class.

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Solution Summary

This solution is comprised of a detailed explanation of standard normal distribution or z score. In this solution, step-by-step explanation of this complicated topic provides students with a clear perspective of standard normal distribution to find the probability

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The solution is very helpful to understand the concept of these types of problem. Step by step solution is attached for better understanding and clarity to this problem.

Null Hypothesis (Ho): There is no significant association between driver's education and accidents.
Alternative Hypothesis (Ha): There is a significant association between driver's education and accidents.
Level of Significance = .05
Test statistics is given below:
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