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Carbon-14 is a radioactive element with a half-life of about 5730 years. Carbon-14 is said to decay exponentially. The decay rate is 0.000121 . We start with 1 gram of carbon-14. We are interested in the time (years) it takes to decay carbon-14.
What is being measured here?
In words, define the Random Variable .
= Time (years) to decay carbon-14
Find the amount (percent of 1 gram) of carbon-14 lasting less than 5730 years. This means, find .
Find the percentage of carbon-14 lasting longer than 10,000 years.
Thirty percent (30%) of carbon-14 will decay within how many years?
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