Question

The time that it took students to complete an obstacle course in Gym class follows a normal distribution.
The mean time is 21 minutes with a standard deviation of 4 minutes.
Emilio took 27 minutes to complete the course.

Find the z-score that corresponds to Emilio's time.

Answer 1

z = (x − μ) / σ = (27 − 21) / 4 = 6 / 4 = 1.5.