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- To seethe effect of a relatively small error in the estimate of the amountof carbon-14 in a sample being dated, consider this hypotheticalsituation: A bone fragment found in central Illinois in the year 2000 contains 17% of its original carbon-14 content. Estimate the year the animal died.9. A 4 cm cube is cut into 1 cm cubes. What is the percentage increase in the surface area after cutting?3. The red blood cell count of a healthy person was measured on each of 15 days. The number recorded is measured in 106 cells per microliter
- How many significant figures does 0.405 021 kg have?The mean ±1 sd of ln [calcium intake (mg)] among 25 females, 12 to 14 years of age, below the poverty level is 6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake (mg)] among 40 females, 12 to 14 years of age, above the poverty level is 6.80 ± 0.76. Compute a 95% CI for the difference in means between the two groups.What percent of 2 rad is ?/11 rad?