1. What is the Discrete Variance for the following numbers? x P(X) 0 0.72 1 0.06 2 0.15 3 0.03 4 0.04 2. What is the Expected Value when sample size is 124 with a probability of 0.36? 3. What is the Discrete Variance when sample size is 82 with a probability of 0.05? 4. What is the Discrete Standard Deviation when sample size is 55 with a probability of 0.44? 5. What is the Discrete Standard Deviation for the following numbers? x P(X) 0 0.59 1 0.05 2 0.11 3 0.14 4 0.11 6. Calculate the coefficient of variation for salary (in dollars per hour) using this sample data 55, 78, 18, 27, 51, 51 7. Calculate the standard deviation products sold per store using this population data 81, 0, 41, 0, 32, 97 8. Calculate the variance number of errors using this population data 35, 4, 27, 44, 42, 10 9. What is the Expected Value for the following numbers? x P(X) 0 0.07 1 0.07 2 0.17 3 0 4 0.1 5 0.03 6 0.03 7 0.29 8 0.24 10. Calculate the range sales per store using this data 74, 49, 4, 33, 82, 76 11. hat is the Normal Distribution Probability where X is more than 85.29 for a mean of 146, and standard deviation of 61.32 12. What is the probability of randomly selecting someone who is Student and has a Y? W Y Totals Student 17 22 39 Professor 23 28 51 Totals 40 50 90 13. In a roulette game of 36 numbers, how many ways can you pick 4 numbers if order is not important? 14. Calculate the skew sales per store using this sample data 74, 49, 4, 33, 82, 76 15. What is the probability of randomly selecting a New service? New service Old service Totals Senior 27 27 54 Adult 21 16 37 Totals 48 43 91 16. Calculate the 33th percentile for the data below. 81, 0, 41, 0, 32, 97, -3, 5, 2 17. Calculate the z score for sales per store x = 45 sales. Use this sample data. 74, 49, 4, 33, 82, 76 18. Using the Empirical Rule, in a normal distribution what percentage of values would fall into an interval of -16.34 to 102.34 where the mean is 43 and standard deviation is 19.78? Please format to 3 decimal places. 19. Calculate the mode: 0, 77, 38, -5, 44, 62, 0, 34, 43 A) no mode B)0 C) 77 D) Bimodal 20. What is the Binomial Probability when the number of trials is 12, probability is 0.21, and we want exactly 6 successes. Use 4 decimal places. 21. What is the Central Limit Probability where x is less than 347.27 for a population mean of 407, and standard deviation of 199.43 where the sample size is 60? 22. What is the probability of randomly selecting a Y, given you selected a Female? W Y Totals Male 29 17 46 Female 20 27 47 Totals 49 44 93 23. What is the probability of randomly selecting a Male or a Old service? New service Old service Totals Male 26 19 45 Female 19 16 35 Totals 45 35 80 24. Calculate the median for number of errors using this data. 56, 52, 51, 16, 29, 78 25. Calculate the average number of sales people per store using these numbers: 91, 53, 71, 4, 30, 16. Use two decimal points for all questions in this test unless a specific question asks for something different