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9. Define Y = a + bX, where a, b are constants with b > 0, and X follows a N(0, 1) distribution. (i) Find

9. Define Y = a + bX, where a, b are constants with b > 0, and X follows a N(0, 1) distribution. (i) Find the pdf fy(y); (ii) Find the mof My (t)

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