A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1463 and the standard deviation was 314. The test scores of four students selected at random are 1870, 1220, 2190, and 1340. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1870 is 1.30 (Round to two decimal places as needed.). The z-score for 1220 is -0.77 (Round to two decimal places as needed.). The z-score for 2190 is 2.32 (Round to two decimal places as needed.). The z-score for 1340 is (Round to two decimal places as needed.) Which values, if any, are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice. OA. The unusual value(s) is/are. (Use a comma to separate answers as needed.) OB. None of the values are unusual. 80 808 # " I' || MacBook Air CD A √i V 1₁ DII F8 (0,8) More DD F9 J F10 a F11 § F12 Next
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1463 and the standard deviation was 314. The test scores of four students selected at random are 1870, 1220, 2190, and 1340. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1870 is 1.30 (Round to two decimal places as needed.). The z-score for 1220 is -0.77 (Round to two decimal places as needed.). The z-score for 2190 is 2.32 (Round to two decimal places as needed.). The z-score for 1340 is (Round to two decimal places as needed.) Which values, if any, are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice. OA. The unusual value(s) is/are. (Use a comma to separate answers as needed.) OB. None of the values are unusual. 80 808 # " I' || MacBook Air CD A √i V 1₁ DII F8 (0,8) More DD F9 J F10 a F11 § F12 Next
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 5CR
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