10
QuizMultiple Choice
Population Proportion — Unit test
Question 10 • AZ-Common Core Algebra II B
The set of life spans of an appliance is normally distributed with a mean = 48 months and a standard deviation = 8 months. What is the life span of an appliance that has a z-score of –3?
Answer
A
3 monthsB
24 monthsC
45 monthsD
72 months