3. Radioactive vecay ine amount A (in grams) of radioactive plutonium remaining in a 20-gram sample after i days is given by the formula A = 20 - (1/2)/140. At what rate is the plutonium decaying when t= 2 days? Answer in appropriate units. --ameldav

You are a crime scene investigator trying to match the lead content of bullet fragments found at a crime scene to the lead content of a box of bullets found with a suspect. To simplify this question, assume that the instrument you use gives you one measurement per fragment in grams/cm3. Assume that you have 5 measurements from fragments found at the crime scene and 7 measurements from bullets found with the suspect. (b) What are H0and Ha? Write them both mathematically and in words. (c) You run the analysis and the p-value is 0.0001 and α = 0.001, and β = 0.9. If you reject H0, what is the probability that you made the wrong decision in this case?

Water is pumped at a rate of 6L/h. How long will it take to pump 14L (Answer in hours and minutes)

Find the appropriate value of t  for 95% CI with n=31.