The radius is 2 and area = r^2*pi so 4*pi gives you 12.56 so the exact answer would be 12.56 and the answer with pi would be 4 times 3.14!
Answer: i believe it would be (-3 , 5)
Step-by-step explanation:
Correct me if im wrong
X is 5 in this case!!!!hope it helps
Answer:
(0.2278, 0.3322)
Step-by-step explanation:
Given that out of 400 people 112 agree and 288 disagree
Proportion of people agreeing = 

For confidence interval 90% we have critical value as
1.645
Margin of error =1.645*SE
=
Confidence interval 