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A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1480 and the standard deviation was 310. The test scores of four students selected at random are 1880, 1240, 2200, and 1380. 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 1240 is (Round to two decimal places as needed.) The z-score for 2200 is (Round to two decimal places as needed.) The z-score for 1380 is

A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1480 and the standard deviation was 310. The test scores of four students selected at random are 1880, 1240, 2200, and 1380. 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 1240 is (Round to two decimal places as needed.) The z-score for 2200 is (Round to two decimal places as needed.) The z-score for 1380 is

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1480 and the standard deviation was 310. The test scores of four students selected at random are 1880, 1240, 2200, and 1380. 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 1240 is (Round to two decimal places as needed.) The z-score for 2200 is (Round to two decimal places as needed.) The z-score for 1380 is
Transcribed Image Text:A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1480 and the standard deviation was 310. The test scores of four students selected at random are 1880, 1240, 2200, and 1380. 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 1240 is (Round to two decimal places as needed.) The z-score for 2200 is (Round to two decimal places as needed.) The z-score for 1380 is
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