Question

The average height of adult females is 64.4 inches, with a standard deviation of 2.3 inches and a normal distribution. Rayna is 67.1 inches tall. What is the standardized score for Rayna’s height?

A. -1.17
B. 1.17
C. -0.17
D. 0.17
E. Unable to determine the standardized score

Answer 1

The correct answer is B! I hope that helped. Enjoy the rest of you day :)

Answer 2

B. 1.17

Explanation:

The z-score is:

z = (x − μ) / σ

z = (67.1 − 64.4) / 2.3

z = 1.17