Answer:
The confidence interval is 
Step-by-step explanation:
From the question we are told
The sample proportion 
The margin of error is 
The confidence interval for p is mathematically represented as

=> 
=> 
The answer is $6.38 hope this helps
Answer:
300 days
Step-by-step explanation:
What you have to do is divide 600/2. Then you get 300.
Hope it helped :)