Question

2) According to Consumer Reports magazine, the costs per pound of protein for 20 major-brand beef hot dogs are

$14.23, $21.70, $14.49, $20.49, $14.47, $15.45, $25.25, $24.02, $18.86, $18.86, $30.65, $25.62, $8.12, $ 12.74,
$14.21, $13.39, $22.31, $19.95, $22.90, and $19.78, respectively. If the least expensive is considered the top-
ranked, what is the position in terms of a z-score of Thorn Apple Valley beef hot dogs at $14.23 per pound of
protein?
A) -2.67
B) -0.85
C) 0.85
D) 1.42
E) 2.67
Statistics: How would I find the answer?

Answer 1

Answer: -0.85

Step-by-step explanation: a = score-mean/ standard deviation

Mean (add them all up and divide by amount) = 18.8745

Standard deviation =

σ2 = Σ(xi - μ)2/N

= 5.333458985499

SCORE = 14.23

= -0.85