# business statistics

Question 1l%20What is the arithmatic mean of the following set of numbers? 90, 91, 77, 110, 94, 92, 89, 100, 119, 113,112, 83.a. 64b. 1170c. 100.6d. 97.58 pointsQuestion 2l%20Below is a frequency table of board lengths. What lenght of boards has the lowest frequency?Length (inches) Number of Items10 up to 20 320 up to 30 430 up to 40 840 up to 50 9a. 30 up to 40b. 10 up to 20c. 20 up to 30d. 40 up to 509 pointsQuestion 3l%20The departments in a large corporation are listed such as finance, marketing, and warehouse supervision . Which level of measurement are these departments?a. Intervalb. Nominalc. Ratiod. Ordinal8 pointsQuestion 4l%20The numbers of traditional print newspapers sold were examined. Which level of measurement is the number of newspapers sold?a. Ordinalb. Ratioc. Intervald. Nominal8 pointsQuestion 5l%20What is the class interval for the table of factory wages below?Hourly Wages Number of Wage Earners\$10 – up to \$13 22\$13 – up to \$16 28\$16 – up to \$19 10\$19 – up to \$22 8a. \$2.50b. \$8c. \$3d. \$28 pointsQuestion 6l%20The mean life of a light bulb is 1000 hours and the standard deviation is 100 hours. The life of the part is normally distributed allowing the use of the Empirical Rule. Applying the Empirical Rule, it can be concluded that 99.7% of the bulbs will last between:a. 800 and 1200 hoursb. 950 – 1150 hoursc. 700 and 1300 hoursd. 900 and 1100 hours8 pointsQuestion 7l%20What is the best choice of graph/chart to display the follow data as given?Weight Cumulative Number10-15 pounds 320-25 pounds 930-35 pounds 1240-45 pounds 17a. Cumulative frequency graphb. Bar chartc. Histogramd. Pie chart8 pointsQuestion 8l%20What is the best choice of graph/chart to display the opinion survey data below?Response Number of ResponsesNot Satisfied 20Satisfied 40Very Satisfied 60a. Bar chartb. Cumulative frequency chartc. Frequency Polygond. Histogram9 pointsQuestion 9l%20What is the relative frequency of those earning salaries between \$30,000 and \$40,000?Annual Salaries Number\$30,000 – \$40,000 5\$50,000 – \$60,000 10\$80,000 – \$90,000 3\$100,000 – \$110,000 7a. 0.12b. 0.024c. 0.4d. 0.209 pointsQuestion 10l%20Which of the following is an example of a discrete variable?a. Number of hunters in the woodsb. Temperature of a heat treating processc. Weight of ball bearings in machineryd. Distance between Backus, MN and Conway, AR8 pointsQuestion 11l%20The data set below is a sample data set. Calculate the sample standard deviation.10, 20, 30a. 13b. 66.7c. 8.2d. 109 pointsQuestion 12l%20What is the interquartile range for the following set of data?Minimum = 20Q1 = 30Median = 50Q3 = 70Maximum = 100a. 30b. 80c. 40d. 608 pointsQuestion 13l%20Data Set A, Data Set B, and Data Set C, have the same population mean of 50. Data set A has a standard deviation of 13. Data Set B a standard deviation of 25. Data Set C a standard deviation of 14. Which data set distribution has the largest spread in the distribution?a. Data Set Bb. Data Set Cc. Data Set Ad. None of the above9 pointsQuestion 14l%20Examine the dot plot in the middle of page 87 that is associated with question #48. What is the number of days that 90 Biggie Size soft drinks were sold?a. 2 daysb. 8 daysc. 14 daysd. 12 days8 pointsQuestion 15l%20Please use Chart 2-7 on page 43 of your text book. Approximately 25% of vehicles sold for what what amount of profit?a. \$1800b. \$1425c. \$1600d. \$23008 pointsQuestion 16l%20Refer to the following wage breakdown. What is the class midpoint for the wage class with the highest frequency?Wage (\$) Frequency5-7 149-11 1513-15 2817-19 22a. \$15b. \$19c. \$6d. \$148 pointsQuestion 17l%20The median value in the following set of numbers is:54, 76, 30, 18, 46, 82a. 49b. 50c. 46d. 49.89 pointsQuestion 18l%20The entire set of individuals or objects of interest is also called a ——————?a. Tallyb. Filec. Populationd. Sample8 pointsClick Save and Submit to save and submit. Click Save All Answers to save all answers.Take Test: Exam 1ContentAssistive Technology Tips [opens in new window]l%20 Test InformationInstructionsDescription This test covers Chapters 1, 2, 3, 4 of the text. There are 18 questions, all 8 or 9 points each for a total of 150 points. You are allotted two hours for the exam.Instructions Click the most correct answer to each question and ensure you submit the exam. I will not be able to award credit if you do not submit the exam.Timed Test This test has a time limit of 2 hours.This test will save and submit automatically when the time expires.Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain.Multiple Attempts Not allowed. This test can only be taken once.Remaining Time:1 hour, 32 minutes, 44 seconds.Question Completion Status:Question 1l%20What is the arithmatic mean of the following set of numbers? 90, 91, 77, 110, 94, 92, 89, 100, 119, 113,112, 83.a. 64b. 1170c. 100.6d. 97.58 pointsQuestion 2l%20Below is a frequency table of board lengths. What lenght of boards has the lowest frequency?Length (inches) Number of Items10 up to 20 320 up to 30 430 up to 40 840 up to 50 9a. 30 up to 40b. 10 up to 20c. 20 up to 30d. 40 up to 509 pointsQuestion 3l%20The departments in a large corporation are listed such as finance, marketing, and warehouse supervision . Which level of measurement are these departments?a. Intervalb. Nominalc. Ratiod. Ordinal8 pointsQuestion 4l%20The numbers of traditional print newspapers sold were examined. Which level of measurement is the number of newspapers sold?a. Ordinalb. Ratioc. Intervald. Nominal8 pointsQuestion 5l%20What is the class interval for the table of factory wages below?Hourly Wages Number of Wage Earners\$10 – up to \$13 22\$13 – up to \$16 28\$16 – up to \$19 10\$19 – up to \$22 8a. \$2.50b. \$8c. \$3d. \$28 pointsQuestion 6l%20The mean life of a light bulb is 1000 hours and the standard deviation is 100 hours. The life of the part is normally distributed allowing the use of the Empirical Rule. Applying the Empirical Rule, it can be concluded that 99.7% of the bulbs will last between:a. 800 and 1200 hoursb. 950 – 1150 hoursc. 700 and 1300 hoursd. 900 and 1100 hours8 pointsQuestion 7l%20What is the best choice of graph/chart to display the follow data as given?Weight Cumulative Number10-15 pounds 320-25 pounds 930-35 pounds 1240-45 pounds 17a. Cumulative frequency graphb. Bar chartc. Histogramd. Pie chart8 pointsQuestion 8l%20What is the best choice of graph/chart to display the opinion survey data below?Response Number of ResponsesNot Satisfied 20Satisfied 40Very Satisfied 60a. Bar chartb. Cumulative frequency chartc. Frequency Polygond. Histogram9 pointsQuestion 9l%20What is the relative frequency of those earning salaries between \$30,000 and \$40,000?Annual Salaries Number\$30,000 – \$40,000 5\$50,000 – \$60,000 10\$80,000 – \$90,000 3\$100,000 – \$110,000 7a. 0.12b. 0.024c. 0.4d. 0.209 pointsQuestion 10l%20Which of the following is an example of a discrete variable?a. Number of hunters in the woodsb. Temperature of a heat treating processc. Weight of ball bearings in machineryd. Distance between Backus, MN and Conway, AR8 pointsQuestion 11l%20The data set below is a sample data set. Calculate the sample standard deviation.10, 20, 30a. 13b. 66.7c. 8.2d. 109 pointsQuestion 12l%20What is the interquartile range for the following set of data?Minimum = 20Q1 = 30Median = 50Q3 = 70Maximum = 100a. 30b. 80c. 40d. 608 pointsQuestion 13l%20Data Set A, Data Set B, and Data Set C, have the same population mean of 50. Data set A has a standard deviation of 13. Data Set B a standard deviation of 25. Data Set C a standard deviation of 14. Which data set distribution has the largest spread in the distribution?a. Data Set Bb. Data Set Cc. Data Set Ad. None of the above9 pointsQuestion 14l%20Examine the dot plot in the middle of page 87 that is associated with question #48. What is the number of days that 90 Biggie Size soft drinks were sold?a. 2 daysb. 8 daysc. 14 daysd. 12 days8 pointsQuestion 15l%20Please use Chart 2-7 on page 43 of your text book. Approximately 25% of vehicles sold for what what amount of profit?a. \$1800b. \$1425c. \$1600d. \$23008 pointsQuestion 16l%20Refer to the following wage breakdown. What is the class midpoint for the wage class with the highest frequency?Wage (\$) Frequency5-7 149-11 1513-15 2817-19 22a. \$15b. \$19c. \$6d. \$148 pointsQuestion 17l%20The median value in the following set of numbers is:54, 76, 30, 18, 46, 82a. 49b. 50c. 46d. 49.89 pointsQuestion 18l%20The entire set of individuals or objects of interest is also called a ——————?a. Tallyb. Filec. Populationd. Sample8 points

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