A government officer is studying the relationship between marital status and education level of adults in DDD country. One hundred and fifty adults are randomly sampled. Their education levels are classified as primary education or below, secondary education and tertiary education or above. The observed frequencies are presented in the following table. Marital Status Observed Frequencies Not Married Married Primary Education or below 10 42 Education Secondary Education 16 35 Level Tertiary Education or above 19 28 Using 2.5% level of significance, the government officer determines if there is any association between marital status and education level of adults in DDD country. Correct the test statistic to 2 decimal places