The following data represents the IQ scores of 11 randomly s…
The following data represents the IQ scores of 11 randomly selected Americans. 85 86 92 98 101 101 103 106 107 132 139 (Round to 3 decimal places as needed) a. Calculate the mean [a] b. Calculate the median [b] c. Calculate Q1 [c] d. Calculate Q3 [d] e. Calculate the IQR [e] f. Calculate the lower fence [f] g. Calculate the upper fence [g] h. List any outliers (leave blank if no outliers; if there are multiple, separate them with commas) [h]
Read DetailsThe final exam grades of a Business Statistics class are bel…
The final exam grades of a Business Statistics class are bell-shaped with a mean of 81 and a standard deviation of 4. a. Calculate the z-score of a student scoring an 86 on the midterm. [a] b. Approximately what percentage of students scored between a 73 and 93? [b] c. Approximately what percentage of students scored below a 77? [c]
Read DetailsLet the sample space S = {4, 5, 6, 7, 8, 9, 10, 11, 12, 13,…
Let the sample space S = {4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}, the event A = {5, 6, 12, 14} and the event B = {5, 7, 10, 12, 13}. (For parts a and b, separate the elements with commas and put your answers in numerical order.) a. List the elements of A
Read DetailsA researcher is interested in the heights of all students at…
A researcher is interested in the heights of all students at a local college. The researcher randomly selects 45 students and finds a mean height of 68.5 inches with a standard deviation of 2.74 inches. (Round to 3 decimal places as needed) a. Construct a 95% confidence interval for the mean heights of all students at this college: Set up the confidence interval with the appropriate values: (Point estimate)
Read DetailsThere are 600 employees at Company A. Based on the above gra…
There are 600 employees at Company A. Based on the above graph, answer the following questions. a. How many employees have a salary between $75,000 and $125,000? [a] b. Give the name of the shape that best describes the shape of the distribution. [b] c. Based on the shape, what is the best measure of central location? [c]
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