Question 19 4 pi: 1) The following gure is a probability density curve that represents the grade point average of the graduating seniors in a large university. What is the probability that a randomly selected senior will have grade point average greater than 3.5? Write youranswer as a decimal ' 2) The following gure is a probability density curve that represents a continuous uniform distribution. Find the value of "?' (i.e. xcoordinate of the point where the line representing the density curve crosses the yaxis). See beEow. Write youranswer as a fraction a/b. Please do not insert any blanks. I: Question 20 4 pi: Consider the following data: 3. 4. 7, 12. 6. 8. 16. 4. Flnd mean : ' median = ' first quartile : I third quartile : Question 21 4 ms There are 10 marbles in a jar : 4 marbles with a number 1 on it and 6with a number 7. We select randomly one marble. Dene the sample space of this experiment (use the proper notation, ie. i]. do not insert any spaces). Sample space is: ' Find the probability of getting 7 ' Suppose that after selecting a marble we put it back in thejar and randomly select another marble. What is the probability that both times we selected a marble with number 1 Write you answers about the probability as decimals