HELP A random sample of 100 felony trials showed a sample mean waiting time between arrest and trial = 173 days with a population standard deviation of waiting times = 28 days. Find a 99% confidence interval for the population mean waiting time.

Stats question, I'm really stck please help me!

The 99% confidence interval is    

Step-by-step explanation:

From the question we are told that

     The sample size is  n  = 100

     The sample mean is  

      The population standard deviation is    

From the question we are told the confidence level is  99% , hence the level of significance is    

=>  

Generally from the normal distribution table the critical value  of   is  

Generally the margin of error is mathematically represented as  

=>    

Generally 95% confidence interval is mathematically represented as  

=>        

=>      

because 1.2 isnt half of 6 duh