Determine the half-life of radioactive element
The unknown radioactive element decays in non-radioactive substances. In 760 days radioactivity of the sample decreases by 62 percent.
i) Determine the half-life of element?
ii) How long it will take for the sample of 100mg to decay to 96 mg?
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Employ the given degree of confidence and sample data to construct a confidence interval for the population mean? Assume that the population has a normal distribution.
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