a-company-compares-the-mean-monthly-sales-in-units-of-two-sales-teams-team-x-x11

Question

A company compares the mean monthly sales (in units) of two sales teams.
Team X: $x ˉ sub 1 equals 155$ , $sigma sub 1 equals 15$ , $n sub 1 equals 30$ .
Team Y: $x ˉ sub 2 equals 148$ , $sigma sub 2 equals 12$ , $n sub 2 equals 35$ .
Construct a $90 percent sign$ confidence interval for the difference in mean sales ( $mu sub 1 minus mu sub 2$ ).

Accepted Answer

(11, 1313)

Answer

(33, 1111)

Answer

(00, 1313)

Answer

(−1-1, 1515)