Based on the Normal model for yearly snowfall in cm in a certain town N(57, 8), how many Cm's of snow would represent the 80th percentile approximately?
A)64.5 cm.
B)63.7 cm.
C)63.3 cm.
D)62.7 cm.
E)61.7 cm.

Question

Quizplus · Accepted Answer

The 80th percentile corresponds to a z-score of approximately 0.84. Using the formula X = μ + zσ, where μ = 57 and σ = 8, we calculate X = 57 + 0.84(8) = 63.72, which is approximately 63.7 cm.

Based on the Normal Model for Yearly Snowfall in Cm