Question

Eleven sales executive trainees are assigned selling jobs right after their recruitment. After a fortnight they are withdrawn from their field duties and given a month’s training for executive sales. Sales executed by them in thousands of rupees before and after the training, in the same period are listed below: Sales Before Training Sales After Training 23 24 20 19 19 21 21 18 18 20 20 22 18 20 17 20 23 23 16 20 a. Do these data indicate that the training has contributed to their performance? b. Find the 95 per cent confidence Interval of the training. ?

Answer 1

Answer :ok lets give some new answer Explanation: