x3[x+4y=1]
-
3x+5y=10
-1y=-9
x-1 [-1y=-9]
y=9
        
                    
             
        
        
        
Answer:
The value of the test statistic is 
Step-by-step explanation:
Our test statistic is:

In which X is the sample mean, 
 is the expected value, 
 is the standard deviation and n is the size of the sample.
The level of ozone normally found is 7.5 parts/million (ppm).
This means that 
The mean of 24 samples is 7.8 ppm with a standard deviation of 0.7.
This means that 
Test Statistic:



The value of the test statistic is 
 
        
             
        
        
        
Answer:
150 by 100
Step-by-step explanation:
 
        
             
        
        
        
Write the folowing in standard form and you well get 
#1 is 5b
#2 is b−8x+<span>4</span>