A random variable Y , taking values in R+, is said to have a lognormal distribution with parameters μ and σ2 if lnY ∼ N(μ,σ2). Find the probability density function of Y
1.A random variable Y , taking values in R+, is said to have a lognormal distribution with parameters μ and σ2 if lnY ∼ N(μ,σ2). Find the probability density function of Y .6 marks 2.Suppose that X1 and X2 are independent discrete random variables. Show that the covariance between them is zero.4 marks