9. The mass of a radioactive substance is 400mg and decreases by 6% per year. What is its mass after 9 years?

Q: The half-life of a radioactive substance is 15 days. If we started with 20 g, how much of the…

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Q: The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced…

A: Topic = Algebra

Q: 9. Using the graph of S(x) below, which evaluation is correct? 10 -10-9 -8 -7 -6 -5 -4 -2 -1 -1 5 6…

A: The given graph is a parabola.

Q: 10. You have 20 grams of phosphorus that decays 5% per day. How long does it take for it to be 10 g?

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Q: Q1) A radioactive isotope has a half-life of 16 days. You wish to have 30 g at the end of 30 days.…

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Q: Heavy equipment loses 1/5 of its value each year. 1. how much is a earthmover worth after 1 year if…

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Continuous Probability Distributions

Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.

Normal Distribution

Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!