Question 885873
0.1271 = 1 - Pr(X<6.95)
Pr(X<6.95) = 1 - 0.1271 = 0.8729
The z-value associated with 0.8729 = 1.14
1.14 = (6.95 - mean) / 2.50
6.95 - mean = 2.85
mean = 6.95 - 2.85 = 4.1