Now: a=j+4
6 years ago: Anabelle: a-6; Jason: j-6
 
 
        
        
        
200 books x 30 boxes = 6000 books
6000 books x 20 shipping crates = 120,000 books
Just keep multiplying
        
             
        
        
        
Answer:
(2,4)
Step-by-step explanation:
because the coordinates change places and signs
 
        
                    
             
        
        
        
Answer:
The test statistic is 
Step-by-step explanation:
We are interested in determining whether or not the proportion of the student who experience anxiety during the exam is significantly more than 80%. 
At the null hypothesis, we test if the proportion is 80%, that is:

At the alternate hypothesis, we test if the proportion is more than 80%, that is:

The test statistic is:

In which X is the sample mean,  is the value tested at the null hypothesis,
 is the value tested at the null hypothesis,  is the standard deviation and n is the size of the sample.
 is the standard deviation and n is the size of the sample.
80% is tested at the null hypothesis:
This means that 
A random sample of 100 students was taken. Eighty-five of the student in the sample experienced anxiety during the exam.
This means that 
The test statistic is



The test statistic is 
 
        
             
        
        
        
There would be four rows of 5. If he added one more row of desks he would have 25 desks. 
 Each line is a desk
 
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