A continuous random variable X that can assume values between xequals=11 and xequals=88 has a density function given by f(x)equals=StartFraction 2 (1 plus x )Over 77 EndFraction 2(1+x) 77. Find (a) P(Xless than<77); (b) P(55less than or equals≤Xless than<77).

Find the missing factor in exponential form 48^2=3^2 • ?

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

Ajar contains a mixture of 20 black marbles, 16 red marbles, and 4 white marbles, all the same size. find the probability of drawing a white or red marble on the first draw. 125 12 01 next question ask for turn it in