As of 2021 research is being conducted to study the effects of space travel on human body. For example, astronauts stay on the international Space Station (ISS) on missions and the amount of radiation they are exposed to is measured. Suppose the radiation they are exposed to on a regular six month mission follows a Normal distribution with mean 75 millisieverts(mSv) and standard deviation of 20 mSv. If the risk of cancer increases when the astranauts are exposed to more than 100mSv, what is the probability that an astranaut's cancer risk will increase during a regular mission? A. 0.106 B. 0.394 C. 0.606 D. 0.894
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!
As of 2021 research is being conducted to study the effects of space travel on human body. For example, astronauts stay on the international Space Station (ISS) on missions and the amount of radiation they are exposed to is measured. Suppose the radiation they are exposed to on a regular six month mission follows a
- A. 0.106
- B. 0.394
- C. 0.606
- D. 0.894
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