Answer:
5
Step-by-step explanation:
We start by seeing how many families we have in total, which is 20. We then must subtract the number of families with girls only, the number of families with both boys and girls, and the number of families with no children. 20 - 7 is 13, then 13 - 8 is 5, and 5 - 0 is 5.
 
        
                    
             
        
        
        
32.92 next is 27 last is 230
        
             
        
        
        
Answer:
540
Step-by-step explanation:
720 (100-25) to find the decimal to use (below 1.00 is decreasing)
720 (.75) = 540
 
        
             
        
        
        
The coding of the statistic is used to make it easier to work with the large sunshine data set
- The mean of the sunshine is 3.05 
- The standard deviation is approximately  <u>18.184</u>
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Reason:
The given parameters are;
The sample size, n = 3.
∑x = 947
Sample corrected sum of squares, Sₓₓ = 33,065.37
The mean and standard deviation = Required
Solution:

The mean of the daily total sunshine is therefore;



- The mean ≈ 3.05 
Alternatively
,
The mean of the daily total sunshine,  ≈3.05
 ≈3.05

Therefore;

Therefore;
The standard deviation,  ≈ <u>18.184</u>
 ≈ <u>18.184</u>
Learn more about coding of statistic data here:
brainly.com/question/14837870