Answer:
 
  
Step-by-step explanation:
information given
 represent the sample mean
 represent the sample mean  
 represent the population standard deviation
 represent the population standard deviation 
 sample size
 sample size  
 represent the value that we want to test
 represent the value that we want to test  
 represent the significance level for the hypothesis test.
 represent the significance level for the hypothesis test.  
z would represent the statistic 
 represent the p value for the test
 represent the p value for the test 
Hypothesis to test
We want to test if the true mean is less than 12, the system of hypothesis would be:  
Null hypothesis: 
  
Alternative hypothesis: 
  
The statistic is given by:
 (1)
 (1)  
Replacing the info given we got:
We can replace in formula (1) the info given like this:  
 
  
 
        
             
        
        
        
Answer:
The equation to find profit would be y=5.25x-1,150
I'm not sure of what exactly you are looking for, If you need something else let me know and I'll be happy to help!
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Jen Clark can you turn on car Rebecca tatti I miss you baby Palm be my friend
 
        
             
        
        
        
Answer:
Ummm. 1 & 3 look good double check 2
Step-by-step explanation:
HELPFUL?