Based on interviews of couples seeking divorce, a social worker complies the following data related to the period of acquaintanceship before marriage and the duration of marriage:

Acquaintanceship before marriage	Duration of marriage	Total
	Less than or equals to 5 years	More than 5 years
Below 0.5 year	15	7	22
0.5 – 1.5 years	26	22	48
Over 1.5 years	19	11	30
Total	60	40	100

Perform a test to determine if the data substantiate an association between the duration of a marriage and the acquaintanceship prior to marriage. Use 5% level of significance.