A Company Decides To Investigate The Amount Of Sick Leave Taken By Its Employees A Sample Of Seven Employees Yields The 1 (138.34 KiB) Viewed 33 times
A company decides to investigate the amount of sick leave taken by its employees. A sample of seven employees yields the following numbers of days of sick leave taken in the past year. 1140053p Use this information to answer parts a through c. a. Find and interpret the range. The range is days. Choose the correct interpretation of the range below. OA. The number of days separating the fewest and most sick days taken is equal to the range. OB. The largest difference between the mean and any other value equal the range. OC. The range represents the average distance of an observation from the mean. OD. The range gives the most useful value for measuring the spread of the data. b. Find and interpret the standard deviation s. (Round to two decimal places as needed.) Choose the correct interpretation of the standard deviation below. S OA. The standard deviation represents a typical distance of an observation from the mean. OB. The standard deviation represents the sum of the deviations from the mean. OC. Since the standard deviation uses the square of the units of measurement for the original data, it is not easy to interpret. OD. The standard deviation represents finding the deviation for each observation, squaring each deviation, and then adding them up. c. Suppose the 5 was incorrectly recorded and is supposed to be 50. Redo (a)-(b) with the correct data and describe the effect of this outlier. The new range is days. s= (Round to two decimal places as needed.) What is the effect of the outlier? O A. Both the range and standard deviation increase when an outlier is added. OB. Range increases and standard deviation decreases when an outlier is added. OC. Range decreases and standard deviation increases when an outlier is added. O D. Both the range and standard deviation decrease when an outlier is added.
Determine the type of sampling used. Officers for the Department of Motor Vehicles pull aside every 40th tractor trailer passing through a weigh station, starting with the 12th, for an emissions test. Choose the correct answer below. O O Systematic sample Cluster sample Stratified sample Convenience sample Simple random sample
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