Question

The lifetime of a certain type of battery is normally distributed with mean value 11 hours...

The lifetime of a certain type of battery is normally distributed with mean value 11 hours and standard deviation 1 hour. There are nine batteries in a package. What lifetime value is such that the total lifetime of all batteries in a package exceeds that value for only 5% of all packages? (Round your answer to two decimal places.)

hours

Homework Answers

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 certain type of battery is normally distributed with mean value 11 hours...
The lifetime of a certain type of battery is normally distributed with mean value 11 hours and standard deviation 1 hour. There are four batteries in a package. What lifetime value is such that the total lifetime of all batteries in a package exceeds that value for only 5% of all packages? (Round your answer to two decimal places.)
The lifetime of a certain type of battery is normally distributed with mean value 13 hours...
The lifetime of a certain type of battery is normally distributed with mean value 13 hours and standard deviation 1 hour. There are nine batteries in a package. What lifetime value is such that the total lifetime of all batteries in a package exceeds that value for only 5% of all packages? (Round your answer to two decimal places.) hours
The lifetime of a certain type of battery is known to be normally distributed with a...
The lifetime of a certain type of battery is known to be normally distributed with a population standard deviation of 20 hours. A sample of 50 batteries had a mean lifetime of 120.1 hours. a. What is the point estimate? b. Calculate the sampling error. c. Construct a 95% confidence interval for the population mean. Explain the answer in a sentence.
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
When used in a particular DVD player, the lifetime of a certain brand of battery is...
When used in a particular DVD player, the lifetime of a certain brand of battery is normally distributed with a mean value of 12 hours and a standard deviation of 0.8 hours. Suppose that two new batteries are independently selected and put into the player. The player ceases to function as soon as one of the batteries fails. (Use a table or technology.) (a) What is the probability that the DVD player functions for at least 10 hours? (Round your...
1.) The lifetime of a certain type of automobile tire (in thousands of miles) is normally...
1.) The lifetime of a certain type of automobile tire (in thousands of miles) is normally distributed with mean 42 and standard deviation 8. Find the percentile corresponding to p = 36% of the tire lifetimes. Write only a number as your answer. Round to 2 decimal places. 2.) Electricity bills in a certain city have mean $98.09. Assume bills are normally distributed with standard deviation $17.94. Find the value that seperates the lower 40% of the bills from the...
Lifetimes of batteries in a certain application are normally distributed with mean 53 hours and standard...
Lifetimes of batteries in a certain application are normally distributed with mean 53 hours and standard deviation 6 hours. What is the lifetime corresponding to a standard unit of “–1.60”?
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?
The lifetime of a certain brand of battery is known to have a standard deviation of...
The lifetime of a certain brand of battery is known to have a standard deviation of 16 hours. Suppose that a random sample of 50 such batteries has a mean lifetime of 37.6 hours. Based on this sample, find a 90% confidence interval for the true mean lifetime of all batteries of this brand. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. ( If necessary, consult...
The lifetime of a certain kind of battery is exponentially distributed, with an average lifetime of...
The lifetime of a certain kind of battery is exponentially distributed, with an average lifetime of 25 hours. 12. Draw a graph to represent the probability that the average lifetime of 16 batteries is between 20 and 25 hours. Shade an appropriate region. (See Question 8) Question #8 says: Find the probability that the average lifetime of 16 batteries is between 20 and 25 hours.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT