Final answer:
The null hypothesis should be rejected.
Step-by-step explanation:
The question asks whether the null hypothesis should be accepted based on a chi-square test result with a probability value of 0.02. In a chi-square test, the null hypothesis is usually rejected if the p-value is less than the significance level (usually 0.05). Since the given probability value of 0.02 is less than 0.05, the null hypothesis should be rejected.