S. A plumbing company is interested in whether the reasons for service calls tend to differ between weekdays and weekends. The following table summarizes a random sample of 40!] service calls, giving both the reason why the call was made and lsisetlrer_o_r_ngt it was the weekend; do the data provide evidence of an association between the two variables? Test at the 5% signicance level. {3 marks} Se :'on 3'E3k