Answer to Question #301564 in Psychology for Cosmas

Question

2 salesmen, A and B, working in a certain district participated in a survey

conducted by the Head office. It was found that, number of sales made by

A and B are 20 and 18 respectively. Average sales made by A was of about

Rs 170 while for B it was Rs. 205. Standard deviation deviation for A is 20

and for B it is 25. Test whether there is any significant difference in the

average sales between the 2 salesmen at 5% level of significance.

Answer 1

Difference in sales = 20-18 = 2, difference in deviation = 25-20 =5. The total difference is 7. Average of the lower values = (18+20)/2= 19

7/19 = 0.36. This clearly indicates there is significant difference in the average sales.