Use the normal distribution to the right to answer the questions. (a) What percent of the scores are less than 19? (b) Out of 1500 randomly selected scores, about how many would be expected to be greater than 21? Standardized Test Composite Scores 19 21 Score μ= 20.5 o = 5.5

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Use the normal distribution to the right to answer the questions.
(a) What percent of the scores are less than 19?
(b) Out of 1500 randomly selected scores, about how many would be
expected to be greater than 21?
Standardized Test Composite
Scores
19 21
Score
μ = 20.5
o=5.5
Transcribed Image Text:Use the normal distribution to the right to answer the questions. (a) What percent of the scores are less than 19? (b) Out of 1500 randomly selected scores, about how many would be expected to be greater than 21? Standardized Test Composite Scores 19 21 Score μ = 20.5 o=5.5
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