Answer: (0.132132, 0.274368)
Step-by-step explanation:
Given : A simple random sample of 123 people living in Gastown and finds that 25 have an annual income that is below the poverty line.
i.e. n= 123

Critical value for 95% confidence interval : 
Confidence interval for population :

i.e. 

Hence, the 95% confidence interval for the true proportion of Gastown residents living below the poverty line : (0.132132, 0.274368)
The answer is A) 15, Total blue and yellow shirts is 30 were red is 45
45-30=15
Graph using y=mx+b. The point of intersection is (3,8)
The answer is A) left 3, up 2
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