Answer:

Step-by-step explanation:
Multiplying 5 by itself is the same thing as raising it to the second power:

We multiply 2 by itself two seperate times. That's the same thing as raising 2 to the second power to the second power or in simpler terms raising two to the fourth power:

Since only multiplication is present, we can combine the two terms to get:

 
        
             
        
        
        
Answer:
The decision made by the researcher based on this information is to reject the null hypothesis.
Step-by-step explanation:
Two-tailed hypothesis test:
Critical value: 
Test statistic: z
If  , we do not reject the null hypothesis.
, we do not reject the null hypothesis.
If  , we reject the null hypothesis.
, we reject the null hypothesis.
In this question:

Since  , we reject the null hypothesis.
, we reject the null hypothesis.
The decision made by the researcher based on this information is to reject the null hypothesis.
 
        
             
        
        
        
Answer:
15 divided by 2 1/2
Step-by-step explanation:
$6 per yard. 
 
        
             
        
        
        
Answer:
1410ft²
Step-by-step explanation:
20 * 12 * 2 + [62 * (15 + 12)] =
480 + (62 * 15) =
480 + 930 =
1410ft²
 
        
             
        
        
        
Answer:
270 minutes per boy.
Step-by-step explanation:
45 mins each week 
multiplies by 6