Answer
P(X $\lt$ 6) = time for mile in less than 6 minutes
Calculating z:
z = $\frac{x-μ}{σ}$
= $\frac{6-7.11}{0.74}$
= -1.50
Determining corresponding probability from Table A, we get:
P(z $\lt $-1.50) = 0.0668
= 1 - 0.8849 = 0.1151
Work Step by Step
As given above
