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Statistical Abstract of the United States reported that 66% of students who graduated from high school in 2012 enrolled in college. Let X be the number of high school students that enrolled in college. Formulas needed: E(X) = n*p and Var (X) = n*p* (1 − p) a) If exactly 18 high school students are chosen at random, the expected number of high school students that are enrolled in college is Round your answer to the next whole number. b) If exactly 18 high school students are chosen at random, the std(X), standard deviation of the number of them that are enrolled in college is Round your answer to the nearest whole number.

Statistical Abstract of the United States reported that 66% of students who graduated from high school in 2012 enrolled in college. Let X be the number of high school students that enrolled in college. Formulas needed: E(X) = n*p and Var (X) = n*p* (1 − p) a) If exactly 18 high school students are chosen at random, the expected number of high school students that are enrolled in college is Round your answer to the next whole number. b) If exactly 18 high school students are chosen at random, the std(X), standard deviation of the number of them that are enrolled in college is Round your answer to the nearest whole number.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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The Statistical Abstract of the United States reported that 66% of students who graduated from high school in 2012 enrolled in college. Let X be the number of high school students that enrolled in college. Formulas needed: E (X) = n * p and Var (X) = n * p * (1 − p) - a) If exactly 18 high school students are chosen at random, the expected number of high school students are enrolle in college is Round your answer to next whole number. b) If exactly 18 high school students are chosen at random, the std(X), standard deviation of the number of them that are enrolled in college is Round your answer to the nearest whole number.
Transcribed Image Text:The Statistical Abstract of the United States reported that 66% of students who graduated from high school in 2012 enrolled in college. Let X be the number of high school students that enrolled in college. Formulas needed: E (X) = n * p and Var (X) = n * p * (1 − p) - a) If exactly 18 high school students are chosen at random, the expected number of high school students are enrolle in college is Round your answer to next whole number. b) If exactly 18 high school students are chosen at random, the std(X), standard deviation of the number of them that are enrolled in college is Round your answer to the nearest whole number.
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