Context for question 7A random variable X has the probability density functionf(x)={a−x00≤x≤a,otherwise,where a is a constant.
7(a)Continuous Random VariablesHard6 marksShow that E(X)=k2, where k is a constant to be found.Show your workingTypeWriteMath0 wordsk=Grade answerSolutionGrading criteria
7(b)Continuous Random VariablesHard4 marksFind the exact value of the median of X.Show your workingTypeWriteMath0 wordsMedian of XGrade answerSolutionGrading criteria