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.

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.

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.

A Sales Manager for an Advertising Agency Believes There Is