Probability (Normal Distribution etc.)

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To find the proportion of milk bottles containing less than 2 L, one must calculate the probability P(X<2) using the normal distribution parameters provided. The mean is 2.02 L and the standard deviation is 0.09 L. To apply the normal distribution, convert the value of 2 L to a z-score using the formula z = (X - μ) / σ, which standardizes the distribution. This z-score can then be referenced in standard normal distribution tables to find the corresponding probability. Understanding this conversion is crucial for accurately determining the proportion of bottles with less than 2 L of milk.
Master J
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A factory makes milk that is sold as 2 L bottles. The amount of milk per bottle obeys a normal distribution with mean 2.02 and standard deviation 0.09. What proportion of bottles have less than 2 L in them?

Now the exact interpretation etc. of the normal distribution equation is beyond my course at this point, but it, and the values for it, are tabulated in my set of math tables. But I am struggling to understand how to apply it.
Could someone run thru its application in this question?

Thank you very much!
 
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proportion is synonymous with probability. The question is asking you to find the probability of finding a bottle with less than 2L of milk in it, i.e. P(X<2).

Does that help you get started?
 
Do you know how to change from a normal distribution with mean \mu and standard deviation \sigma to the "standard normal distribution" (mean 0, standard deviation 1) which is what the tables give?
 
Question: A clock's minute hand has length 4 and its hour hand has length 3. What is the distance between the tips at the moment when it is increasing most rapidly?(Putnam Exam Question) Answer: Making assumption that both the hands moves at constant angular velocities, the answer is ## \sqrt{7} .## But don't you think this assumption is somewhat doubtful and wrong?

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