Question

Mattel Corporation produces a remote controlled car that requires "three AA batteries." The mean life of...

Mattel Corporation produces a remote controlled car that requires "three AA batteries." The mean life of these batteries in this product id 35 hours. The distribution of the battery lives closely follow the normal probability distribution with a standard deviation of 5.5 hours.

a. compute the expected value and standard deviation of the sample mean.

b.What is the probability that the average life of these batteries will be less than 30 hours?

c.What is the probability that the average life of these batteries will be more than 38 hours?

d. What is the probability that the average life of these batteries will be between 29 and 34 hours?

e. There is a 73 percent chance that the life of these batteries will be below _____ many hours?

f. At least 46 percent of the mean life of these batteries will have _____ hours?

g. The probability that 82 percent of sample mean/average life of these batteries will be symmetrically distributed between what two values around the population mean?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Mattel Corporation produces a remote controlled car that requires ‘three AA batteries’. The mean life of...
Mattel Corporation produces a remote controlled car that requires ‘three AA batteries’. The mean life of these batteries in this product is 35 hours. The distribution of the battery lives closely follows the normal probability distribution with a standard deviation of 5.5 hours. e. There is a 73 percent chance that the life of these batteries will be below _____ many hours? f. At least 46 percent of the mean life of these batteries will be have ____________ hours? g....
Power+, produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows...
Power+, produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal probability distribution with a mean of 18 hours and a standard deviation of 5.4 hours. As a part of its testing program, Power+ tests samples of 25 batteries. Use Appendix B.1 for the z-values. a. What can you say about the shape of the distribution of sample mean? Shape of the distribution is             (Click to select)  Normal  Uniform  Binomial b. What is the standard...
Power+, produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows...
Power+, produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal probability distribution with a mean of 22 hours and a standard deviation of 5.6 hours. As a part of its testing program, Power+ tests samples of 25 batteries. Use Appendix B.1 for the z-values. a. What can you say about the shape of the distribution of sample mean? Shape of the distribution is             (Click to select)  Normal  Uniform  Binomial b. What is the standard...
the mean life of a name brand aa battery is 19 hours. a consumer group is...
the mean life of a name brand aa battery is 19 hours. a consumer group is interested in determining if generic aa batteries have a shorter mean life. this group tested a random sample of 9 generic AA batteries resulting in a mean life of 17.4 hours with a standard deviation of 1.5 hours. you may assume that battery lives follow a normal distribution. At 1% level of significance, do the generic AA batteries have a mean life shorter than...
"Sysnic" battery have had a life expectency of 115 hours. A sample of 49 batteries showed...
"Sysnic" battery have had a life expectency of 115 hours. A sample of 49 batteries showed an average life of 118.5 hours. From past information, it is known that population standard deviation of the batteries is 6 hours, and that the life expectency of batteries follow normal distribution. - If nothing has been changed in a life expectancy of all battteries, what is the probability that sample mean of 49 show average life of 118.5 hours or longer?
A company makes batteries with an average life span of 300 hours with a standard deviation...
A company makes batteries with an average life span of 300 hours with a standard deviation of 75 hours. Assuming the distribution is approximated by a normal curve fine the probability that the battery will last:(give 4 decimal places for each answer) a. Less than 250 hours b. Between 225 and 375 hours c. More than 400 hours
A battery company produces typical consumer batteries and claims that their batteries last at least 100...
A battery company produces typical consumer batteries and claims that their batteries last at least 100 hours, on average. Your experience with their batteries has been somewhat different, so you decide to conduct a test to see if the company’s claim is true. You believe that the mean life is actually less than the 100 hours the company claims. You decide to collect data on the average battery life (in hours) of a random sample and obtain the following information:...
The life spans of batteries are normally distributed, with a mean of 2000 hours and a...
The life spans of batteries are normally distributed, with a mean of 2000 hours and a standard deviation of 30 hours. a. How would we know by looking at the graph, if the probability of batteries with a life span of less 1900 hours is more or less than 50%> Explain your answer. DO NOT show any mathematical work. b. What percent of batteries have a life span that is more than 2065 hours? Show work as in class.
The distribution of the operating life for batteries produced by a manufacturer is approximately normal with...
The distribution of the operating life for batteries produced by a manufacturer is approximately normal with standard deviation 3 hours. A random sample of 19 batteries has a mean operating life of 20 hours. (a) Find a 90% conÖdence interval for the for the true mean life of the battery. (b) Find the minimum number of batteries that should be sampled so that the length of the 90% conÖdence interval will not exceed 0.5.
The distribution of the operating life for batteries produced by a manufacturer is approximately normal with...
The distribution of the operating life for batteries produced by a manufacturer is approximately normal with standard deviation 3 hours. A random sample of 19 batteries has a mean operating life of 20 hours. (a) Find a 90% conÖdence interval for the for the true mean life of the battery. (b) Find the minimum number of batteries that should be sampled so that the length of the 90% conÖdence interval will not exceed 0.5.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT