Answer:
0.79
Step-by-step explanation:
Here,  
Let X be the event that the flights depart on time
Let Y be the event that flights arrive on time
So,  
X∩Y will denote the event that the flights departing on time also arrive on time.
Let P be the probability  
P(X∩Y)=0.65
And
P(X)=0.82
We have to find P((Y│X)
We know that
P((Y│X)=P(X∩Y)/P(X) )
=0.65/0.82
=0.79
So the probability that a flight that departs on schedule also arrives on schedule is: 0.79
 
        
             
        
        
        
B. Abigail used less than Carly and the total was 109.
        
             
        
        
        
The common ratio looks like -2 (-11 * -2 =22) and the missing terms are -44 and 352. (22*-2=-44, -176*-2=352).
        
             
        
        
        
Answer:
b. donations using text message
d. donations using email
Step-by-step explanation:
From the question, it is clear that the people who received these requests were assigned to two groups and these 2 were assigned treatments of if they make donations after either receiving email or text messages after which their respective proportions p1 and p2 are determined.