A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1460 and the standard deviation was 314. The test scores of four students selected at random are 1880, 1180, 2140, and 1340. Finc the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1880 is (Round to two decimal places as needed.) The Z-score for 1180 is (Round to two decimal places as needed.) The Z-score for 2140 is (Round to two decimal places as needed.) The Z-score for 1340 is (Bound to two decimal places as pooded)
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1460 and the standard deviation was 314. The test scores of four students selected at random are 1880, 1180, 2140, and 1340. Finc the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1880 is (Round to two decimal places as needed.) The Z-score for 1180 is (Round to two decimal places as needed.) The Z-score for 2140 is (Round to two decimal places as needed.) The Z-score for 1340 is (Bound to two decimal places as pooded)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1460 and the
standard deviation was 314. The test scores of four students selected at random are 1880, 1180, 2140, and 1340. Find
the z-scores that correspond to each value and determine whether any of the values are unusual.
The z-score for 1880 is
(Round to two decimal places as needed.)
The Z-score for 1180 is
(Round to two decimal places as needed.)
The Z-score for 2140 is
(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.)
B. None of the values are unusual.
-
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