The Director of Student Health Services wishes to know if her anti-smoking campaign has been effective. Last year, a complete survey of all students found the mean number of cigarettes smoked per day by students to be 8.6 with a standard deviation of 2.0. The Director of the Student Health Service obtains the following results from a recently selected random sample of students (in cigarettes smoked per day):

(a)Set up

and

(b)Perform the statistical test (

(c)Draw final conclusions.

Question

The Director of Student Health Services wishes to know if her anti-smoking campaign has been effective. Last year, a complete survey of all students found the mean number of cigarettes smoked per day by students to be 8.6 with a standard deviation of 2.0. The Director of the Student Health Service obtains the following results from a recently selected random sample of students (in cigarettes smoked per day): 
  
(a)Set up 
  
 and 
  
(b)Perform the statistical test (
  
(c)Draw final conclusions.

Quizplus · Accepted Answer

The Answer of The Director of Student Health Services wishes to know if her anti-smoking campaign has been effective. Last year, a complete survey of all students found the mean number of cigarettes smoked per day by students to be 8.6 with a standard deviation of 2.0. The Director of the Student Health Service obtains the following results from a recently selected random sample of students (in cigarettes smoked per day): 
  
(a)Set up 
  
 and 
  
(b)Perform the statistical test (
  
(c)Draw final conclusions.

The Director of Student Health Services Wishes to Know If