Question

A random sample of 16 size AA batteries for toys yield a sample mean of 2.72...

A random sample of 16 size AA batteries for toys yield a sample mean of 2.72 hours with sample standard deviation 0.92 hours. Find a 99% confidence interval for the mean hours of all AA batteries.

Homework Answers

Answer #1

The 99% Confidence interval for the mean hours of all AA batteris is between 2.042 and 3.398

since

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
random sample of 19 size AA batteries for toys yield a mean of 3.45 hours with...
random sample of 19 size AA batteries for toys yield a mean of 3.45 hours with standard deviation, 1.23 hours. (a) Find the critical value, ??, for a 99% CI. ?? = (b) Find the margin of error for a 99% CI.
A random sample of 8 size AA batteries for toys yield a mean of 2.84 hours...
A random sample of 8 size AA batteries for toys yield a mean of 2.84 hours with standard deviation, 1.45 hours. (a) Find the critical value, t*, for a 99% CI. t* (b) Find the margin of error for a 99% CI
A random sample of 13 size AA batteries for toys yield a mean of 2.82 hours...
A random sample of 13 size AA batteries for toys yield a mean of 2.82 hours with standard deviation, 0.84 hours. (a) Find the critical value, t*, for a 99% CI. t* = (b) Find the margin of error for a 99% CI.
A random sample of 15 size AA batteries for toys yield a mean of 2.68 hours...
A random sample of 15 size AA batteries for toys yield a mean of 2.68 hours with standard deviation, 1.24 hours. (a) Find the critical value, t*, for a 99% CI. t* = (b) Find the margin of error for a 99% CI.
(1 point) A random sample of 20 size AA batteries for toys yield a mean of...
(1 point) A random sample of 20 size AA batteries for toys yield a mean of 3.54 hours with standard deviation, 1.08 hours. (a) Find the critical value, t*, for a 99% CI. t* = ______(b) Find the margin of error for a 99% CI._____
A random sample of 14 size AA batteries for toys yield a mean of 3.23 hours...
A random sample of 14 size AA batteries for toys yield a mean of 3.23 hours with standard deviation, 0.54 hours. (a) Find the critical value, t*, for a 99% CI (give to at least 3 decimal places). t* = (b) Find the margin of error for a 99% CI (give to at least 2 decimal places).
6. Consumer report gave the following information about the life (hour) size AA batteries in toys:,...
6. Consumer report gave the following information about the life (hour) size AA batteries in toys:, 3, 5, 7, 11, and 7,20(you need to calculate mean and standard deviation first) a) Find mean and Standard deviation b) Find 95% Confidence interval for life of the batteries.
Suppose x has a mound-shaped distribution. A random sample of size 16 has sample mean 10...
Suppose x has a mound-shaped distribution. A random sample of size 16 has sample mean 10 and sample standard deviation 2. (b) Find a 90% confidence interval for μ (c) Interpretation Explain the meaning of the confidence interval you computed.
A simple random sample of size n is drawn. The sample​ mean, x overbarx​, is found...
A simple random sample of size n is drawn. The sample​ mean, x overbarx​, is found to be 18.4, and the sample standard​ deviation, s, is found to be 4.9 Construct a 95​% confidence interval about muμ if the sample​ size, n, is 35. find lower and upper bounds. Construct a 99​% confidence interval about muμ if the sample​ size, n, is 35 what is the lower and upper bounds?
Generic batteries cost less than brand-name batteries, but do they perform as well? A random sample...
Generic batteries cost less than brand-name batteries, but do they perform as well? A random sample of 65 generic AA batteries had a mean lifetime of 183.1 minutes with a standard deviation of 14.8 minutes. An independent random sample of 40 brand-name AA batteries had a mean lifetime of 192.5 minutes with a standard deviation of 10.5 minutes. Using these data, test using a 5% significance level whether brand-name batteries have a longer mean lifetime.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT