Answer:
A
Step-by-step explanation:
A
 
        
                    
             
        
        
        
Answer:
(C) 1/2
Step-by-step explanation:
If 4s is 2 more than 4t, then:
- 4s = 2+ 4t
- 4s - 4t = 2
- 4s/4 - 4t/4 = 2/4
- s - t = 1/2
(C) is the answer
 
        
                    
             
        
        
        
Answer: 24.9793
Step-by-step explanation:
Given :  The director randomly selects 64 different 24-hour periods and determines the number of admissions for each.
 For this sample, he calculated a mean   and a standard deviation of 100.
 and a standard deviation of 100. 
The 95% confidence interval results in an interval of 
We know that the confidence interval for population mean is given by :_
 , where E is the margin of error.
, where E is the margin of error.
 By comparing this to the given interval , we find that the margin of error = 24.9793