Question # 1 The discrete random variable X has probability mass function given by x=123.4.5 P X -It x-6 where k is a constant O otherwise (a) Determine the value of (b) Find the mode (c) Find the mean and variance of the distributionStatistics Formulae A Mean = 1 3 Sample Variance =5 Some Probability Formulae 1 PUB)= PAP(5)-P(AND) PMAnB)= RA/B). P(5) 4. MAYBEPA) PunB)= PAR5) MA= RABAD+ MABRAD MBIAA MBARA+ MBARA 9. 10. 11. 12. 13. 14. far x = 0.1,23... 15. P(x)= pq*-1