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1. Let {X1, X2, ... , Xn} depict a set of sample random variables drawn from a N(θ , 1) population. Find a best unbiased estimator of θ 2. Does the variance of this estimator attain the Cramér-Rao lower bound?
2. Let X1, ... , Xn depict a random sample drawn from the probability density function f (x; θ) = θxθ -1,0 x 1, θ > 0. Find the minimum variance bound for an unbiased estimator of θ .
An article in USA Today stated that "Internal surveys paid for by directory assistance providers show that even the most accurate companies give out wrong numbers 15% of the time."
find the critical values for the indicated test for a population variance sample size n and the level of significance
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Sketch the areas under the standard normal curve over the indicated intervals, and find the specified areas.
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Temperature in a certain city for the month of June follows a uniform distribution over the interval 61º F to 91º F. What is the probability that a randomly selected June day has a temperature that exceeds 70º F?
a local childrens boutique specializes in formal wear for young girls. it has recently hired a new seamstress. to
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