Homework Help is Here – Start Your Trial Now!
Math
Statistics
The scores of an entrance examination are known to be normally distributed with a mean of 118 and standard deviation as 12. (i) (ii) If a candidate obtaining a score of at least 100 is declared successful, what is the probability that a candidate chosen at random will be successful? (ii) Obtain the lowest score of the top 25% of the candidates. If it is decided to pass 70% of those taking the examination what should be the lowest passing scores?

The scores of an entrance examination are known to be normally distributed with a mean of 118 and standard deviation as 12. (i) (ii) If a candidate obtaining a score of at least 100 is declared successful, what is the probability that a candidate chosen at random will be successful? (ii) Obtain the lowest score of the top 25% of the candidates. If it is decided to pass 70% of those taking the examination what should be the lowest passing scores?

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
See similar textbooks
icon
Related questions
Question
The scores of an entrance examination are known to be normally distributed with a mean of 118 and standard deviation as 12. (ii) E If a candidate obtaining a score of at least 100 is declared successful, what is the probability that a candidate chosen at random will be successful? (ii) Obtain the lowest score of the top 25% of the candidates. If it is decided to pass 70% of those taking the examination what should be the lowest passing scores?
Transcribed Image Text:The scores of an entrance examination are known to be normally distributed with a mean of 118 and standard deviation as 12. (ii) E If a candidate obtaining a score of at least 100 is declared successful, what is the probability that a candidate chosen at random will be successful? (ii) Obtain the lowest score of the top 25% of the candidates. If it is decided to pass 70% of those taking the examination what should be the lowest passing scores?
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
SEE MORE TEXTBOOKS