X and Y are random variables and C is a constant. What is incorrect about the nature of mathematical expectations in the following options?

• A.E(CX)=CE(X)
• B.E(X+Y)=E(X)+E(Y)
• C.E(C)=C
• D.E(XY)=E(X)E(Y )

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Which of the following options is not how the TensorFlow program reads data?

• A.feed data (Feeding)
• B.write a file format reader
• C.preload data (Preload)
• D.read from the file

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Which of the following about the description of expectations and variances is incorrect?

• A.Expectation reflects the average level of random variable values
• B.The variance reflects the degree of deviation between the random variable and its mathematical expectation
• C.The greater the expectation the smaller the variance
• D.Expectation and variance are both numerical characteristics of random variables

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Which descriptions are correct about python's index? (Multiple Choice)

• A.Index from left to right defaults from 0
• B.Index from left to right defaults from 1
• C.Index from right lo left defaults from -1
• D.Index from right to left defaults from 0

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What is the subject of artificial intelligence?

• A.Mathematics and Physiology
• B.Comprehensive mterd1sc1pl1nary and marginal d1sc1phnes
• C.Linguistics
• D.Psychology and Physiology

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