Answer:
False
Step-by-step explanation:
9 cannot be equal to 31
 
        
             
        
        
        
<span>Use the Pythagorean theorem for the right triangle 

 where

 is the hypotenuse of the triangle;

 and 

 are the other two sides.
So,

</span>
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Given
See attachment for complete question
Required

From the attachment, we have:

 ---- the sample size
Next, we list out all outcomes more than or equal to 5.
i.e.

5 is represented with the vertical blue rectangle (with frequency 21).
So, the other elements are to the right of frequency 21.
So, we have:


The probability is then calculated as:

This gives

