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STAT 200: Elementary Statistics Mid-Term Exam(CORRECTLY answered questions to improve your grades)

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STAT 200: Elementary Statistics Mid-Term Exam NOTE: This exam is open book and open notes; you may also use a computer. An Excel file containing the data sets for each problem is available on the course’s LEO website. If you use Excel to solve a problem and wish to get “partial credit” should you miss the question, you must submit it in the submission folder with your exam. Please use the following naming convention: LastName – STAT200 – Mid-Term Exam.xlsx Add extra tabs as required; use the naming convention for the tabs “Solution 16.A.” Do NOT make my search to find your solutions. If I am not able to find a solution, you will receive 0 points for that question. Questions 1-15 Score: out of 45 Question 16 Score: out of 70 Question 17 Score: out of 25 Question 18 Score: out of 20 Question 19 Score: out of 15 Question 20 Score: out of 10 Question 21 Score: out of 30 Question 22 Score: out of 35 Total Score: out of 250 Questions 1-15 are worth 3 points each for a total of 45 points. 1. (3 points) Which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate for salaries of college professors. (Circle one) 2. (3 points) If a tax auditor selects every 10,000th tax return that is submitted, which form of sampling is he/she using? (Circle one) 3. (3 points) are sample values that lie very far away from the vast majority of other sample values. 4. (3 points) The mathematical formula for finding ?(? ?? ?) is ?(?) + ?(?) − ?(? ∩ ?). (Circle one) 5. (3 points) A is a graph consisting of bars of equal width drawn adjacent to each other (unless there are gaps in the data). (Circle one) 6. (3 points) The of a data set is a measure of center indicating the value that occurs with the greatest frequency. 7. (3 points): Quartiles are measures of location which divide a data set into 100 groups with about 1% of the values in each group. (Circle one)  8. (3 points) For any event A, the probability of A is between -1 and 1 inclusive. That is, −1 ≤ ?(?) ≤ 1. (should be 0 and 1 inclusive, or 0 ≤ ?(?) ≤ 1. 9. (3 points) For any event ?, it’s denoted by ?̅, consists of all outcomes in which event ? does not occur. 10. (3 points) Two events A and B are if they cannot occur at the same time (that is, their Venn diagrams do not overlap). (Circle one) 11. (3 points) The of B given A, dented by ?(?|?), represents the probability of event B occurring after it is assumed that event A has already occurred. 12. (3 points) A(n) is a variable (typically represented by x) that has a single numerical value, determined by chance, for each outcome of a procedure. (Circle one) 13. (3 points) Which of the following is not a requirement of a binomial probability distribution? (Circle one) 14. (3 points) The is a discrete probability distribution that applies to occurrences of some event over a specified interval. The random variable x is the number of occurrences of the event in an interval. 15. (3 points) The probability that event A occurs in a first trial and event B occurs in a second trial is denoted as: (Circle one) ....................................................................CONTINUED...................................................................................

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