Answer step-by-step explanation:
We know that the critical t value for a 98% confidence level for a sample of size n = 18:
Finding degrees of freedom (n-1) = 17
-search the information in table t for 0.98 and find that t = 2.567
 
        
             
        
        
        
Answer:
b
Step-by-step explanation:
The formula for calculating future value:
FV = P (1 + r)^n
FV = Future value  
P = Present value  
R = interest rate  
N = number of years 
let a = second month's revenue
5000 = a(1.3) 
a = 5000 / 1.3 = 3846
 
        
             
        
        
        
The first number is 27 and the second number is 45 so the ratio would be 27;45