1. What is y-bar (for research)? What is y-bar (for primary care)? ...

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     1. What is   y-bar (for research)? What is y-bar (for primary care)?      2. Find the 95% confidence   interval for the difference between the means. In context, interpret your   answer using standard statistical language.    

     3. Test to   determine whether there is a difference in the average enrollment for the two   specializations. Use a = 5%.   a. Write the null and   alternate hypotheses for this problem using notations or in English.    

     b. State   your conclusion to include the p-value.