5. Consider the following frequency distribution of x-values: x: 5 10 20 25 f: 3 7 8 2 The mean of these data values is: A. 15.00 B. 14.75 C. 14.50 D. None of the above 6. The following histogram gives the times taken by a random sample of workers of a company to complete a specific task. Number of Workers O - N W A U O V O DO 10 20 30 40 50 60 70 80 90 Time (min) An estimate of the mean time taken by this group of workers is: A. 51.7 min B. 47.0 min C. 49.7 min D. 50.0 min 7. Consider this question stem for both the current question (7) and question eight (8): A sample of ten employees at an auditing firm is randomly selected. The probability that three employees in this sample have an honors' degree is 0.215 while the probability that four employees in this sample have an honors' degree is 0.251. Given that the probability of a success is p, determine the value of p approximate to three (3) decimal places. A. 0.084 B. 0.400 C. 0.854 D. 0.454