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Save An urn contains 4 red balls and 5 white balls. A sample of 2 balls is slected at random and the number of red balls observed. Determine the probability distribution for this experiment and draw its histogram. The probability to draw zero red balls is , to draw one red ball is , and to draw two red balls is (Simplify your answers.) Two classes take the same examination and the grades are recorded Construct a relative frequency distribution of the data. in the table below. The table gives the frequency distribution of grades in each class. Find the relative frequency distribution and the Relative Frequency histogram for each class. Describe the difference in the grade Grade 9 AM class 10 AM class distributions for the two classes. F Number of students Grade| 9 AM class 10 AM class 8 14 17 19 11 Round to the nearest thousandth as needed.) 8 22 A 24 single die is rolled four times. Find the probability that 4 appears at most twice. The probability that the number 4 appears at most twice is (Round to four decimal places as needed.)