Answer:
The mean of x is close to 14.8.
The standard deviation of x is close to 3.78.
Step-by-step explanation:
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and each trial can only have two outcomes, with probabilities  and
 and  .
.
For an experiment with n repeated trials and a probability of success  , we have that:
, we have that:
The mean is: 
The standard deviation is: 
In this problem
There are 400 employees, each with a probability of 3.7% of having food allergy. So  . So:
. So:

The mean of x is close to 14.8.

The standard deviation of x is close to 3.78.
 
        
             
        
        
        
Answer:
I'm not sure about that one sorry but I will look it up
 
        
             
        
        
        
Step-by-step explanation: Lets estimate first to the nearest whole number.
15.8 kilograms estimated is 16 kg
17.42 kilograms estimated is 17 kg
16.28 kilograms estimated is 16 kg
Now add the estimated values, 16 + 17 + 16 = 49 kg
The estimate gives you the correct answer because it gives you an accurate reasonable amount in this problem.
 
        
                    
             
        
        
        
4/5*9/10= 36/50 = 18/25
Just multiply the fractions straight across since area is length*height
        
                    
             
        
        
        
5y=15-3x
y=3-3/5x
hope it helps:):)