The set of life spans of an appliance is normally distributed with a mean mu is equal to 48 months and a standard deviation sigma is equal to 8 months. What is the life span of an appliance that has a z -score of negative 3 ?

Name: Revolt
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24  months

Practice Test

The set of life spans of an appliance is normally distributed with a mean mu is equal to 48 months and a standard deviation sigma is equal to 8 months. What is the life span of an appliance that has a z -score of negative 3 ?

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