b) The life expectancy of the radioactive isotopes is exponentially distributed with a mean 3 years. i) What is the probability that the radioactive elements will last at least 15 years? ii) If the radioactive isotopes already lasted for 5-years, what is the probability it will be lasted after an additional 20 years?
b) The life expectancy of the radioactive isotopes is exponentially distributed with a mean 3 years. i) What is the probability that the radioactive elements will last at least 15 years? ii) If the radioactive isotopes already lasted for 5-years, what is the probability it will be lasted after an additional 20 years?
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.CR: Chapter 13 Review
Problem 61CR
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![b) The life expectancy of the radioactive isotopes is exponentially distributed
with a mean 3 years.
i)
What is the probability that the radioactive elements will last at least
15 years?
ii)
If the radioactive isotopes already lasted for 5-years, what is the
probability it will be lasted after an additional 20 years?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F52865605-aa07-44a9-a6d6-3713c256a671%2F83e3be12-8095-4c2a-b249-40ba71e4bc01%2Fd0pchzt_processed.png&w=3840&q=75)
Transcribed Image Text:b) The life expectancy of the radioactive isotopes is exponentially distributed
with a mean 3 years.
i)
What is the probability that the radioactive elements will last at least
15 years?
ii)
If the radioactive isotopes already lasted for 5-years, what is the
probability it will be lasted after an additional 20 years?
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