Question

In a random sample of five airlines, the round trip fare from Ontario to San Francisco...

In a random sample of five airlines, the round trip fare from Ontario to San Francisco is found to be $211, $241, $277, $299, and $322. Assume that these airfares are normally distributed with a standard deviation of $50 dollars.

a. find the sample mean.

b. construct a 90% confidence interval for the sample mean.

c. construct a 95% confidence interval for the sample 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
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that is normally distributed. The sample​ mean, x overbar​, is found to be 109​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 95​% confidence interval about mu if the sample​ size, n, is 18. ​(b) Construct a 95​% confidence interval about mu if the sample​ size, n, is 14. ​(c) Construct a 90​% confidence interval about mu if the sample​ size, n,...
A simple random sample of size n=18 is drawn from a population that is normally distributed....
A simple random sample of size n=18 is drawn from a population that is normally distributed. The sample mean is found to be x overbar =50 and the sample standard deviation is found to be s=14. Construct a 90​% confidence interval about the population mean.
A simple random sample of size n = 14 is drawn from a population that is...
A simple random sample of size n = 14 is drawn from a population that is normally distributed. The sample mean is found to be x = 56 and the sample standard deviation is found to be s = 11. Construct a 90​% confidence interval about the population mean. The 90​% confidence interval is ​
The following are airborne times (in minutes) for 10 randomly selected flights from San Francisco to...
The following are airborne times (in minutes) for 10 randomly selected flights from San Francisco to Washington Dulles airport. 269 255 267 285 274 275 266 258 271 281 (a) Compute a 90% confidence interval for the mean airborne time for flights from San Francisco to Washington Dulles. (Round your answers to three decimal places.) (b) Give an interpretation of the 90% confidence level associated with the interval estimate in part (a). a) If we were to take a large...
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that is normally distributed. The sample? mean, is found to be 112?, and the sample standard? deviation, s, is found to be 10. ?(a) Construct a 95?% confidence interval about mu? if the sample? size, n, is 18. ?(b) Construct a 95?% confidence interval about mu? if the sample? size, n, is 11. ?(c) Construct a 70?% confidence interval about mu? if the sample? size, n, is 18....
A simple random sample of size n=22 is drawn from a population that is normally distributed....
A simple random sample of size n=22 is drawn from a population that is normally distributed. The sample mean is found to be x overbar 69 and the sample standard deviation is found to be s equals=20. Construct a 90​% confidence interval about the population mean. The 90​% confidence interval is ​(?,?​)
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that is normally distributed. The sample​ mean, x overbar​, is found to be 105​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 95​% confidence interval about mu if the sample​ size, n, is 26. ​(b) Construct a 95​% confidence interval about mu if the sample​ size, n, is 20. ​(c) Construct an 80​% confidence interval about mu if the sample​ size, n,...
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that is normally distributed. The sample​ mean, x overbar​, is found to be 113​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 95​% confidence interval about mu if the sample​ size, n, is 24. ​(b) Construct a 95​% confidence interval about mu if the sample​ size, n, is 17. ​(c) Construct a 70​% confidence interval about mu if the sample​ size, n,...
simple random sample of size n is drawn from a population that is normally distributed. The...
simple random sample of size n is drawn from a population that is normally distributed. The sample​ mean, x overbar​, is found to be 112​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 90​% confidence interval about mu if the sample​ size, n, is 19. ​ (b) Construct a 90​% confidence interval about mu if the sample​ size, n, is 12. ​ (c) Construct an 80​% confidence interval about mu if the sample​ size,...
A simple random sample of size n=23 is drawn from a population that is normally distributed....
A simple random sample of size n=23 is drawn from a population that is normally distributed. The sample mean is found to be x bar=68 and the sample standard deviation is found to be s=15. Construct a 90?% confidence interval about the population mean. The 90?% confidence interval is ?(nothing?,nothing?).
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT