Question 1:

A 2016 Stats Canada study looked at the percentage of Canadian families that are debt-free by age group. The results of the random sample of 2,500 Canadian families is summarized in the table below. Is there enough evidence to conclude that being debt-free depends on age? Test the hypothesis at the 5% level of significance.

\fDebt Free? Under 35 35 to 44 45 to 54 55 to 64 65 and older Total Yes 145 (187.5) 60 (150) 90 (150) 105 (?) 350 750 No 480 (437.5) 315 (350) 410 (350) 295 250 1750 Total 625 375 500 400 600 2,500