The probability density function of the life span of a battery is given by the function below, where t is in years. f(t) = 1.25e-1.25t 0 if t > 0 if t < 0 d.) What is the probability that a battery will have a life span between 1.5 and 4 years? e.) Determine the mean value of the life span of the batteries.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.1: Measures Of Center
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The probability density function of the life span of a battery is given by the function below, where t
is in years.
f(t) =
1.25e-1.25t
0
if t > 0
if t < 0
d.) What is the probability that a battery will have a life span between 1.5 and 4 years?
e.) Determine the mean value of the life span of the batteries.
Transcribed Image Text:The probability density function of the life span of a battery is given by the function below, where t is in years. f(t) = 1.25e-1.25t 0 if t > 0 if t < 0 d.) What is the probability that a battery will have a life span between 1.5 and 4 years? e.) Determine the mean value of the life span of the batteries.
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