Question

A light bulb is advertised as lasting an average of 1000 hours with a standard deviation...

A light bulb is advertised as lasting an average of 1000 hours with a standard deviation of 150 hours. Find the probability of buying a light bulb that will last between 900 and 1050 hours. Assume the variable is normally distributed.

Homework Answers

Answer #1

TOPIC:Normal distribution.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The lifetime of a light bulb in a certain application is normally distributed with mean =...
The lifetime of a light bulb in a certain application is normally distributed with mean = 1000 hours and a standard deviation = 100 hours. A) What is the probability that a lightbulb will last more than 1100 hours? B) Find the 10th percentile of the lifetimes C) What is the probability that the lifetime of a light bulb is between 900 and 1100 hours?
The lifetime of lightbulbs that are advertised to last for 5800 hours are normally distributed with...
The lifetime of lightbulbs that are advertised to last for 5800 hours are normally distributed with a mean of 6100 hours and a standard deviation of 150 hours. What is the probability that a bulb lasts longer than the advertised figure?
The lifetimes of light bulbs that are advertised to last for 5, 000 hours are nor-...
The lifetimes of light bulbs that are advertised to last for 5, 000 hours are nor- mally distributed with a mean of 5, 100 hours and a standard deviation of 200 hours. What is the probability that a bulb lasts longer than the advertised figure?
Q7: There is a large supply of light bulbs with the average life of 1000 hours...
Q7: There is a large supply of light bulbs with the average life of 1000 hours and the standard deviation of 50 hours. A light bulb is drawn at random. Find the probability that it will last more than 1020 hours. A random sample of 25 light bulbs is drawn. Find the probability that the sample average life is more than 1020 hours.
The lifetime of lightbulbs that are advertised to last for 6000 hours are normally distributed with...
The lifetime of lightbulbs that are advertised to last for 6000 hours are normally distributed with a mean of 6100 hours and a standard deviation of 100 hours. What is the probability that a bulb lasts longer than the advertised figure?
There is a large supply of light bulbs with the average life of 1000 hours and...
There is a large supply of light bulbs with the average life of 1000 hours and the standard deviation of 50 hours. A light bulb is drawn at random. Find the probability that it will last more than 1020 hours. A random sample of 25 light bulbs is drawn. Find the probability that the sample average life is more than 1020 hours. Using Ti-34 calculator Equations/answer written out using binomcdf(x,x,x) Binompdf(x,x,x) Invnorm InvT tcdf If possible/needed to solve the equation
It is known that the lifetime of a certain type of light bulb is normally distributed...
It is known that the lifetime of a certain type of light bulb is normally distributed with a mean lifetime of 1,060 hours and a standard deviation of 125 hours. What is the probability that a randomly selected light bulb will last between 1,000 and 1,100 hours?
USE ONLY EXCEL FOR SOLUTION! The life of light bulbs is distributed normally. The standard deviation...
USE ONLY EXCEL FOR SOLUTION! The life of light bulbs is distributed normally. The standard deviation of the lifetime is 15 hours and the mean lifetime of a bulb is 590 hours. Using Excel, find the probability of a bulb lasting for at most 605 hours. Round your answer to four decimal places. PLEASE USE ONLY EXCEL AND SHOW FORMULAS USED IN SOLUTION. THANK YOU!
A new extended-life light bulb has an average life of 750 hours, with a standard deviation...
A new extended-life light bulb has an average life of 750 hours, with a standard deviation of 50 hours. If the life of these light bulbs approximates a normal distribution, about what percent of the distribution will be between 650 hours and 850 hours? Seleccione una: A. 95% B. 68% C. 99% D. 34%
The lifetime of a certain type of battery is normally distributed with a mean of 1000...
The lifetime of a certain type of battery is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours. Find the probability that a randomly selected battery will last between 950 and 1050 hours
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT