Answer:
 
    
 
  
 
  
We see that the p value i higher than the significance level so then we FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly higher than 13.2 *the value of 2008 ).
Step-by-step explanation:
Information given
 represent the sample mean
 represent the sample mean 
 represent the sample standard deviation
 represent the sample 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
 represent the significance level
t would represent the statistic (variable of interest)  
 represent the p value for the test
 represent the p value for the test 
Hypothesis to test
We want to conduct a hypothesis in order to check if the true mean has increased from 2008 , and the system of hypothesi are:  
Null hypothesis: 
  
Alternative hypothesis: 
  
The statistic for this case is:
 (1)
  (1)  
Calculating the statistic
Replacing the info given we got:
 
    
P-value
The degrees of freedom are:
 
  
Since is a right tailed test the p value is:  
 
  
Decision
We see that the p value i higher than the significance level so then we FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly higher than 13.2 *the value of 2008 ).