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Consider the estimation of an unknown parameter θ ≥ 0 under the squared error loss. Show that if T and U are two estimators such that T ≤ U and RT (P) <>U (P), then RT+ (P) <>U+ (P), where RT (P) is the risk of an estimator T and T+ denotes the positive part of T.
in a town there are on average 2.4 children in a family and a randomly chosen child has on averate 1.55 siblings.
a food manufacturer uses an extruder that yields revenue for the firm at a rate of 200 per hour when in operation.
Determine the least squares estimators γ and δ for this second model associated to corresponding LS estimators α and β of first model?
Run a simple linear regression of these five pairs of numbers and estimate a linear relationship between income and percentage growth in wealth.
a discrete random variable has moment generating function mxt e2et-1.find exfind
The projected terminal value at the end of Year 3 is $8,000,000. The firm's Weighted Average cost of Capital (WACC) is 12.5%.
What is the percentile rank for X=6? What is the percentile rank for X=9? For the following scores, the lowest value is X=13. Place the scores in a frequency table using.
Hallmark would like to test the hypothesis that those celebrating Valentine's Day will spend more than an average of $125 on gifts. A random sample of 18 people celebrating Valentine's Day spent an average of $148.50 with a standard deviation of $..
a. Differences in age between husbands and wifes ( husband age minus wife age) of married couples have a distribution that approximately follows the normal curve with a mean of 1.5 years and a std of 2.1 years. negative differences indicate that t..
Researchers testing a new medication find that 7% of users have side effects. To how many pa- tients would a doctor expect to prescribe the medication before finding the first one who has side effects?
a researcher reports the following equation for a best-fitting straight line to a set of data points ycirc?1.01x3.24.
1. Student researchers took a random sample of 100 students and calculated the ratio of backpack weight to body weight for each student. They found a sample mean ratio of 0.07713, and a sample standard deviation of 0.03664.
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