The ACT is an exam used by colleges and universities to evaluate undergraduate applicants. The test scores are normally distributed. In a recent year, the mean test score was 22.2 and the standard deviation was 4.9. The test scores of four students selected at random are 16, 24, 9, and 35. a) Find the z-scores that correspond to each value. b) Determine whether any of the values are unusual.
The ACT is an exam used by colleges and universities to evaluate undergraduate applicants. The test scores are normally distributed. In a recent year, the mean test score was 22.2 and the standard deviation was 4.9. The test scores of four students selected at random are 16, 24, 9, and 35. a) Find the z-scores that correspond to each value. b) Determine whether any of the values are unusual.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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![The ACT is an exam used by colleges and universities to evaluate undergraduate
applicants. The test scores are normally distributed. In a recent year, the mean test
score was 22.2 and the standard deviation was 4.9. The test scores of four students
selected at random are 16, 24, 9, and 35.
a) Find the z-scores that correspond to each value.
b) Determine whether any of the values are unusual.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa5b9ab80-c15e-46d7-8003-c733ab4df490%2F124f2989-959b-4ba4-8396-c9fcbd27e5a0%2Fnibpnhd_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The ACT is an exam used by colleges and universities to evaluate undergraduate
applicants. The test scores are normally distributed. In a recent year, the mean test
score was 22.2 and the standard deviation was 4.9. The test scores of four students
selected at random are 16, 24, 9, and 35.
a) Find the z-scores that correspond to each value.
b) Determine whether any of the values are unusual.
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