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b) Show that x, -x)-o a) Suppose Y =-X . Show in a diagram this function, what will be the correlation coefficient between X and Y? 4 the correlation coefficient must b) i) If the covariance between two variables is be positive. True or False? suggest? i) If the covariance between two variables is zero, what does it 5 a) Define mutually exclusive events and independent events bi) For two events A and B (which are not mutually exclusive) complete the following P(AUB) i) For two events, A and B, which are statistically independent events, complete the following
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show that Σ(Xi--)-t Pref hephesint alu pais sinte SD > y duoen no t in the wariation iu Y x and

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