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In Exercise, use the following information.
Chapter , Problem 20E(choose chapter or problem)
Problem 20E
In Exercise, use the following information. The scores for the science reasoning portion of the ACT test are normally distributed. In a recent year, the mean test score was 20.9 and the standard deviation was 5.2. The test scores of four students selected at random are 17, 29, 8, and 23.
Determine whether any of the values are unusual.
Questions & Answers
QUESTION:
Problem 20E
In Exercise, use the following information. The scores for the science reasoning portion of the ACT test are normally distributed. In a recent year, the mean test score was 20.9 and the standard deviation was 5.2. The test scores of four students selected at random are 17, 29, 8, and 23.
Determine whether any of the values are unusual.
ANSWER:
Solution
Step 1 of 1
We have to find the z score for the given values and we have to indicate the unusual values
Given mean score is 20.9
Standard deviation is 5.2
Then the standard normal variate