I think the answer is 263.52. Hope it's right!
Answer:
266.67
Step-by-step explanation:
120=.45(x)
x=266.67
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 
Since it wants total to brown you have to do the ratio in that order.
There are a total of 8 puppies of which two are brown.
T:B
8:2 reduces to 4:1