A standardized exam's scores are normally distributed. In a recent year, the mean test score was 21.4 and the standard d

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A Standardized Exam S Scores Are Normally Distributed In A Recent Year The Mean Test Score Was 21 4 And The Standard D 1 (36.9 KiB) Viewed 23 times

A standardized exam's scores are normally distributed. In a recent year, the mean test score was 21.4 and the standard deviation was 5.3. The test scores of four students selected at random are 16, 24, 9, and 36. Find the Z-scores that correspond to each value and determine whether any of the values are unusual. The Z-score for 16 is (Round to two decimal places as needed.) The Z-score for 24 is (Round to two decimal places as needed.) The 2-score for 9 is (Round to two decimal places as needed.) The Z-score for 36 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.) O B. None of the values are unusual.