12(months) x 20 (years) = 240
10.98 x 240 = 2635.20
So Arthur will pay $2635.20 over 20 years for premium.
I hope this helps :)
        
                    
             
        
        
        
Answer:
n=1849
Step-by-step explanation:
Previous concepts
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  
The margin of error is the range of values below and above the sample statistic in a confidence interval.  
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  
The population proportion have the following distribution
 
Solution to the problem 
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by  and
 and  . And the critical value would be given by:
. And the critical value would be given by:
 
The margin of error for the proportion interval is given by this formula:  
 (a)
    (a)  
And on this case we have that  and we are interested in order to find the value of n, if we solve n from equation (a) we got:
 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  
 (b)
   (b)  
Assuming that the proportion is estimated  . And replacing into equation (b) the values from part a we got:
. And replacing into equation (b) the values from part a we got:
 
  
And rounded up we have that n=1849
 
        
             
        
        
        
74 degrees
An angles value is 1/2 of the value of its corresponding arc. Angle x has the corresponding arc of 148, so it’s 148/2 or 74 degrees
        
             
        
        
        
The function f(x)= 1/x^2 is even. Hope that helps!
 
        
             
        
        
        
The answer will be 60+ because 48 minutes is a long time and if youstudy for a long time you memorize more