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Earn +20 ptsQ: Approximately what fraction of an original Co-60 sample remains after 21 years?
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What fraction of an original 20.00gram sample of nitrogen-16 remains unchanged after 36.0 seconds?
2
What fraction of a sample of N 16 remains undecayed after 43.2 seconds?
1.5% remains after 43.2 seconds.
What is the total number of years that must pass before only 25.00 grams of an original 100.0 gram sample of c-14 remains unchanged?
25/100 = 1/4 of the original sample. The "half-life" must pass twice, yielding (1/2) x (1/2) = 1/4 of the original sample. The half-life of Carbon-14 is listed as ( 5,730 ± 40 ) years. Twice that is ( 11,460 ± 80 ) years
The fraction or ratio of a sample possessing a certain trait is called a what?
The Symbol p that denotes sample proportion.
What measure of central tendency is most stable from sample to sample?
Statistically speaking, the mean is the most stable from sample to sample. Whereas, the mode is the least stable statistically speaking from sample to sample.
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