A sales manager for an advertising agency believes there is a relationship between the number of contacts and the amount of the sales. To verify this belief, the following data was collected:
The 95% confidence interval for 30 calls is
A) 55.8, 51.5
B) 51.4, 55.9
C) 46.7, 60.6
D) 31.1, 76.2
E) None of the choices are correct

Question

A sales manager for an advertising agency believes there is a relationship between the number of contacts and the amount of the sales. To verify this belief, the following data was collected:   
The 95% confidence interval for 30 calls is
A) 55.8, 51.5 
B) 51.4, 55.9 
C) 46.7, 60.6 
D) 31.1, 76.2 
E) None of the choices are correct

Quizplus · Accepted Answer

The Answer of A sales manager for an advertising agency believes there is a relationship between the number of contacts and the amount of the sales. To verify this belief, the following data was collected:   
The 95% confidence interval for 30 calls is
A) 55.8, 51.5 
B) 51.4, 55.9 
C) 46.7, 60.6 
D) 31.1, 76.2 
E) None of the choices are correct

A Sales Manager for an Advertising Agency Believes There Is