The length of time it takes students to complete a statistics examination is uniformly distributed and varies between 80 and 120 minutes. Find the mathematical expression for the probability density 9. а. function. Compute the probability that a student will take between 90 and 100 minutes to complete the examination. b. Compute the probability that a student will take no more than 80 minutes to complete the examination. С. d. What is the expected amount of time it takes a student to complete the examination? е. What is the standard deviation for the amount of time it takes a student to complete the examination?
The length of time it takes students to complete a statistics examination is uniformly distributed and varies between 80 and 120 minutes. Find the mathematical expression for the probability density 9. а. function. Compute the probability that a student will take between 90 and 100 minutes to complete the examination. b. Compute the probability that a student will take no more than 80 minutes to complete the examination. С. d. What is the expected amount of time it takes a student to complete the examination? е. What is the standard deviation for the amount of time it takes a student to complete the examination?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Transcribed Image Text:9.
The length of time it takes students to complete a statistics examination is
uniformly distributed and varies between 80 and 120 minutes.
Find the mathematical expression for the probability density
а.
function.
Compute the probability that a student will take between 90 and 100
minutes to complete the examination.
b.
Compute the probability that a student will take no more than 80
minutes to complete the examination.
С.
d.
What is the expected amount of time it takes a student to complete
the examination?
е.
What is the standard deviation for the amount of time it takes a
student to complete the examination?
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