In: Statistics and Probability
A random sample of 18 college men's basketball games during the last season had an average attendance of 5,059 with a sample standard deviation of 1,774
a. Construct an 80% confidence interval to estimate the average attendance of a college men's basketball game during the last season.
The 80% confidence interval to estimate the average attendance of a college men's basketball game during the last season is from a lower limit of_______
to an upper limit of _______(Round to the nearest whole numbers.)
We have given that,      
   
          
Sample mean =5059  
Sample standard deviation =1774
Sample size =18  
Level of significance=1-0.80=0.2  
Degree of freedom =17  
          
t critical value is (by using t table)=  
1.3334  
          
Confidence interval formula is   
=(4501.47,5616.53)      
          
          
          
Lower confidence limit=   4502  
          
Upper confidence limit=   5617  
The 80% confidence interval to estimate the average attendance of
a college men's
basketball game during the last season is from a lower limit of
4502 to an upper limit of 5617