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研究所、轉學考(插大)◆統計學
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108年 - 108政大風管系碩士班招考︰統計學#99521
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題組內容
7. Assume X and Y follow a joint distribution below:
(1) Find t. (10%)
其他申論題
3.Assume X follows an exponential distribution with a mean. This function can be described as follows:What is the expected value of X given X ＞1? (10%)
#416052
4.Do you agree the following statement: "correlation implies causation"? Please clearly specify your reasons. (10%)
#416053
5.Suppose a data set contains 8 observations as follows 7.26, 7.27, 7.24, 7.29, 7.28, 7.25, 7.23 and 7.32. Please test whether the mean of these observations is equal to 7.25 under a statistical significance level of 0.05. () (10%)
#416054
6. Compare and contrast interval scale and ratio scale. (10%)
#416055
(2) Find the marginal probability function of Y. (10%)
#416057
(3) Find the conditional probabilty of Ygiven XE x. (10%)
#416058
Problem 1 (8 points) Evaluate the integral
#416059
Problem 2 (8 points) Evaluate the improper integran is a positive integer.
#416060
Problem 3 (10 points) Find
#416061
Problem 4 (10 points) Find
#416062
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