Answer:
The degrees of freedom are given by:

The significance level is  and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:
 and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:

And if the chi square statistic is higher than the critical value we can reject the null hypothesis in favor of the alternative.
Step-by-step explanation:
We have the followign system of hypothesis:
Null hypothesis: 
Alternative hypothesis: 
The degrees of freedom are given by:

The significance level is  and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:
 and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:

And if the chi square statistic is higher than the critical value we can reject the null hypothesis in favor of the alternative.
 
        
             
        
        
        
D: 1/6 * 2 = 2/12
hope this helps :) (please mark brainliest!)
        
             
        
        
        
Answer: 
Step-by-step explanation:
Given
The length of each cube is 
If there are 6 cubes placed over each other, then the height achieved by the cubes is
 
 
 
        
             
        
        
        
We know that
a1----------> <span>grains of rice in the first square
a1=2
n------------> space ubication
the expressions  is
 an=a1</span>^n----------> an=2<span>^n
for the </span><span>the tenth space  n=10
</span>an=2^10---------> an=1024 grains of rice
the answer is
1024 grains of rice
        
                    
             
        
        
        
3/8
1/4=2/8 so 1/8 + 2/8 is 3/8