10:45 7 Classwork 5.1 and... Q Math 159 classwork 5.1 and 6.1 Name: 1) Which of the following is(are) correct properties of a valid density function f (x). Select all that apply. a) Total area under density function f (x) above the x-axis is 1. b) Total area under density function f (x) can be any positive value including 1. c) The density function f (x)must be above x-axis. d) The density function f (x) function can be above or below x-axis. e) P(x = a) is zero for all a. f) P( X = a) = f (a) 2) Which of the following are valid density function for continuous random variable? (select all that apply) area = 2.5 3) Match the graph with the area under the density curve: A = probability that X is greater than b C= probability that X is less than a B = probability that X is greater than a D = probability that X is less than b E = probability that X is between a and b F = probability that X is not between a and b f(x) 4) Write words that represent the probability expression. P( 4 50) = Probability that P (X