1. 7.25
2. 6.125
3. 3.4
4. 0.15
5. 77
6. 2.15
7. 33.16
8. 1.95
9. 19
10. 0.3
11. 6.2
12. 405
13. 250
14. 11.8
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
step 1
Convert mixed numbers to an improper fractions


step 2
we know that
A teacher reviews 9/2 papers per hour
using proportion
Find how many papers will the teacher review in 19/3 hours
Let
x-----> the number of papers



Convert to mixed numbers

 
        
             
        
        
        
Cubed root (x^2) I can’t add the radical here but it would be the 3radical(x^2)
        
             
        
        
        
Answer: A. Mean of sampling means 
Standard deviation of sampling means =
B. The probability that your sample has mean less than  165 is 0.1492 .
Given : The distribution of blood cholesterol level in the
population of young men aged 20 to 34 years is close to normal with
mean  Mg/dl and standard deviation
 Mg/dl and standard deviation  mg/dl.
 mg/dl.
Sample size : n= 150
Let  sample mean values.
 sample mean values.
A. The mean and the  standard deviation of the distribution of the sampling means would be :
Mean of sampling means =
Standard deviation of sampling means = 

The probability that your sample has mean less than  165 would be

Hence , the probability that your sample has mean less than  165 is 0.1492 .