Answer to Question #44957 in Statistics and Probability for Pranav V K

Question #44957
The marks obtained by a number of students in a certain subject are approximately normally distributed with mean 65 and standard deviation 5. If 3 students are selected at random from this group, what is the probability that at least 1 of them would have scored above 75?
1
Expert's answer
2014-08-25T14:44:47-0400
The answer to the question is available in the PDF file https://www.assignmentexpert.com/https://www.assignmentexpert.com/homework-answers/mathematics-answer-44957.pdf

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

Assignment Expert
25.08.14, 21:46

Dear THIRUNAV Thank you for adding information

THIRUNAV
17.08.14, 09:10

If X represents the marks obtained by the students, X ~Normal (65, 5) P (A student scores above 75) = P(X>75) = P ((75-65)/5 < (X-65)/5

Leave a comment

LATEST TUTORIALS
New on Blog
APPROVED BY CLIENTS