Calculate a confidence interval
In a survey of 500 people, 60% responded with agreement to an attitude question. Calculate a confidence interval at 95% to get an interval estimate for a porportion.
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A wire of length L and resistance R is cut in half, and the two halves are connected in parallel. What is the resistance of the parallel combination?
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Determine the distribution function x -> P (X equal or less than x). (Hint: Remember that the life of the entire system is equal to the maximum of the lifetimes of the two copies of the item.)
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