Yeah because he was at least 80% and when you add the grain and carbon that was total. Then divide the carbon. It will be 80%
Answer:
B 16/y = y/25
C x/16 = 9/x
Step-by-step explanation:
3+-4=-1
3-4=-1
-1=-1
so the answer is:
-1 = -1
<span>A medical researcher wants to investigate the amount of time it takes for patients' headache pain to be relieved after taking a new prescription painkiller. She plans to use statistical methods to estimate the mean of the population of relief times. She believes that the population is normally distributed with a standard deviation of 18 minutes. How large a sample should she take to estimate the mean time to within 4 minutes with 97% confidence?
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n = [z*s/E]^2
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n = [2.17*18/4]^2 = 96 when rounded up
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