Homework Help is Here – Start Your Trial Now!
Math
Statistics
The distribution of the time until change (in days) of a Web site is approximated in the following table. Days until Changes Probability 1.5 0.10 3.0 0.20 4.5 0.35 5.0 0.20 7.0 0.15 Let the random variable X denote the days until change. Calculate the mean for X. Give exact answer. E(X) = days

The distribution of the time until change (in days) of a Web site is approximated in the following table. Days until Changes Probability 1.5 0.10 3.0 0.20 4.5 0.35 5.0 0.20 7.0 0.15 Let the random variable X denote the days until change. Calculate the mean for X. Give exact answer. E(X) = days

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.3: Special Probability Density Functions
Problem 50E: Earthquakes The proportion of the times in days between major earthquakes in the north-south seismic...
See similar textbooks
icon
Related questions
Question
1
4.5 0.35 5.0 0.20 7.0 0.15 Let the random variable X denote the days until change. Calculate the mean for X. Give exact answer. E(X) = days Calculate thè variance for X. Round your answer to three decimal places (e.g. 98.765). V(X) = days?
Transcribed Image Text:4.5 0.35 5.0 0.20 7.0 0.15 Let the random variable X denote the days until change. Calculate the mean for X. Give exact answer. E(X) = days Calculate thè variance for X. Round your answer to three decimal places (e.g. 98.765). V(X) = days?
The distribution of the time until change (in days) of a Web site is approximated in the following table. Days until Changes Probability 1.5 0.10 3.0 0.20 4.5 0.35 5.0 0.20 7.0 0.15 Let the random variable X denote the days until change. Calculate the mean for X. Give exact answer. E(X) = i days
Transcribed Image Text:The distribution of the time until change (in days) of a Web site is approximated in the following table. Days until Changes Probability 1.5 0.10 3.0 0.20 4.5 0.35 5.0 0.20 7.0 0.15 Let the random variable X denote the days until change. Calculate the mean for X. Give exact answer. E(X) = i days
Expert Solution
trending now

Trending now

This is a popular 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
Calculus For The Life Sciences
Calculus For The Life Sciences
Calculus
ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
SEE MORE TEXTBOOKS