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- Estimate the age of a newly discovered fossil for which the ratio of carbon-14 to carbon-12 is R=1/1014.t was predicted that a country will have an elderly population (65 and older) of 7,387,000 in the year 2050 and that this will be 21.6% of the population. What is the total predicted population of this country in 2050? (Round to the nearest thousand people as needed.)Suppose the proportion of all college students who have used marijuana in the past 6 months is p=0.40.ln a class of 150 students that are representative of all college students,would it be unusual for the proportion who have used marijuana in the past 6 months to be less than 0.33? Yes No Cannot be determined. Explain how you made your decision in the above question.
- (a) find the value of A and a, correct to 3 decimal places,(b) predict the percentage of mathematicians after 15 years, and(c) predict the percentage of mathematicians attending the conference inthe long run.The frozen remains of a young Incan womanwere discovered by archeologist Johan Reinhard on Mt. Ampatoin Peru during an expedition in 1995.a. How much of the original carbon-14 was present if the estimated age of the “Ice Maiden” was 500 years?b. If a 1% error can occur in the carbon-14 measurement, whatis the oldest possible age for the Ice Maiden?At the beginning of an experiment, a scientist has 248 grams of radioactive goo. After 120 minutes, her sample has decayed to 3.875 grams.
- The table below gives the annual sales (in millions of S) of a product.How much does the predicted home value increases if the school rating increases by 1 from 9? School Rating (out of 10) Home value in 100k 9 19 6 14 7 16 5 12 8 15 by 100k by 150k by 200k by 250kIn an outbreak of typhoid fever among attendees of an acquaintance party, 99 persons ate spaghetti, 30 of whom developed typhoid fever, 63 ate mac-and-cheese of whom 20 developed typhoid fever. Which group of people had the higher attack rate? Express calculated answers in percentage and in 2 decimal places if applicable.
- You find out that there were 50 new cases of T1DM reported between January 2014 and January of 2016. The estimated mid-year population of Boulder during this time period was 313,333 people. What is the rate of T1DM per 100,000 person-years? Please round to the nearest 100th decimal. and What type of disease occurrence measure did you calculate?Determine the average rate of change between n=10 and n=25 in C(n)= (600+115n) /na sample of ore is found to be 0.0012% diamond and 0.033% copper. What is the percentage of matter in the ore that is neither diamond nor copper? Round your answer to the nearest ten thousandth