4. Fill in the blanks (1 mark) Let f(x) = = x 0≤x≤1 0.5 2x3 0 elsewhere be the pdf for a random variable X. Pr(0.5 < x < 2.7) is 1 (Write your answer in form x.xxx, rounded to the third decimal place.) Enter the correct answer below. 1 Please enter a number for this text box.