Question

A normally distributed measurement historically has had s=12.2cm. What is the probability of getting S=15cm or...

A normally distributed measurement historically has had s=12.2cm. What is the probability of getting S=15cm or higher for a sample of n=20 from this population? What is the 90th percentile for S? Give the Excel formula to answer part B

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
If we take a sample of 6 infants, what is the probability that their mean weight...
If we take a sample of 6 infants, what is the probability that their mean weight (weight is normally distributed in the population) will be above the 61st population percentile for weight? Give your answer as a probability and round to TWO decimal places.
The time it takes to assemble a car in a certain factory is normally distributed with...
The time it takes to assemble a car in a certain factory is normally distributed with a mean of 20 hours and a standard deviation of 2 hours. [Probability = percent] (a) What is the probability that a car can be assembled in less than 19.4 hours? (b) What is the probability that a car can be assembled between 20 and 22 hours? (c) What is the probability that it will take more than 23 hours to assemble a car?...
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, overbar x​, is found to be 115​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 98​% confidence interval about μ if the sample​ size, n, is 20. ​(b) Construct a 98​% confidence interval about μ if the sample​ size, n, is 25. ​(c) Construct a 99​% confidence interval about μ 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 106 ​, and the sample standard​ deviation, s, is found to be 10 . ​(a) Construct a 96 ​% confidence interval about mu if the sample​ size, n, is 20 . ​(b) Construct a 96 ​% confidence interval about mu if the sample​ size, n, is 13 . ​(c) Construct a 70 ​% confidence...
1. A particular fruit's weights are normally distributed, with a mean of 416 grams and a...
1. A particular fruit's weights are normally distributed, with a mean of 416 grams and a standard deviation of 11 grams. The heaviest 17% of fruits weigh more than how many grams? Give your answer to the nearest gram. 2. The patient recovery time from a particular surgical procedure is normally distributed with a mean of 4 days and a standard deviation of 1.9 days. Let X be the recovery time for a randomly selected patient. Round all answers to...
75. Salaries for teachers in a particular elementary school district are normally distributed with a mean...
75. Salaries for teachers in a particular elementary school district are normally distributed with a mean of $44,000 and a standard deviation of $6,500. We randomly survey ten teachers from that district. In words, X = ______________ X ~ _____(_____,_____) In words, ΣX = _____________ ΣX ~ _____(_____,_____) Find the probability that the teachers earn a total of over $400,000. Find the 90th percentile for an individual teacher's salary. Find the 90th percentile for the sum of ten teachers' salary....
A normally distributed population has a mean of 500 and a standard deviation of 60. a....
A normally distributed population has a mean of 500 and a standard deviation of 60. a. Determine the probability that a random sample of size selected from this population will have a sample mean less than . 9 455 b. Determine the probability that a random sample of size selected from the population will have a sample mean greater than or equal to . 25 532 a. P x < 455 = (Round to four decimal places as needed.) b....
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 115​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 98​% confidence interval about mu if the sample​ size, n, is 16. ​(b) Construct a 98​% confidence interval about mu if the sample​ size, n, is 20. ​(c) Construct a 99​% 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 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 bar is found to be 109, and the sample standard​ deviation, s, is found to be 10. a. Construct 95% confidence interval about miu, if the sample size n is 28. Find lower and upper bound. ​b. Construct 95% confidence interval about miu, if the sample size n is 17. Find lower and upper bound. c.Construct 80% confidence interval about...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT