A certain type of light bulb has an average life of 500 hours, with a standard deviation of 100 hours. The length of life of the bulb can be closely approximated by a normal curve. An amusement park buys and installs bulb. Find the probability that it can be expected to last for each period of time. a) More than 500 hours:_________ ( round to 4 decimal places) b) Between 680 and 780 hours: __________ (Round to 4 decimal places) c) Bulbs in the bottom 1% of the distribution of life of all bulbs are subject to refund. What is the longest lifetime a bulb could have and still qualify for a refund? _______ ( round to 1 decimal place)
A certain type of light bulb has an average life of 500 hours, with a standard deviation of 100 hours. The length of life of the bulb can be closely approximated by a normal curve. An amusement park buys and installs bulb. Find the probability that it can be expected to last for each period of time. a) More than 500 hours:_________ ( round to 4 decimal places) b) Between 680 and 780 hours: __________ (Round to 4 decimal places) c) Bulbs in the bottom 1% of the distribution of life of all bulbs are subject to refund. What is the longest lifetime a bulb could have and still qualify for a refund? _______ ( round to 1 decimal place)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
A certain type of light bulb has an average life of 500 hours, with a standard deviation of 100 hours. The length of life of the bulb can be closely approximated by a normal curve. An amusement park buys and installs bulb. Find the probability that it can be expected to last for each period of time.
a) More than 500 hours:_________ ( round to 4 decimal places)
b) Between 680 and 780 hours: __________ (Round to 4 decimal places)
c) Bulbs in the bottom 1% of the distribution of life of all bulbs are subject to refund. What is the longest lifetime a bulb could have and still qualify for a refund? _______ ( round to 1 decimal place)
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman