In a sample of 8 hip surgeries, the average surgery times was 131.5 minutes with a standard deviation of 20.9 minutes.c.) What is the positive critical value that corresponds to an 99% confidence interval for this situation? (round to the nearesthundredth)ta/2%3Dd.) What is the 99% confidence interval estimate of the mean time for hip surgery? (round to two decimal places)

Answered: Image /qna-images/answer/f1bcf7bf-f876-4392-8f1b-ec88597dbd9a.jpg

Answered: c.) What is the positive critical value…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Express the confidence interval (0.017,0.095) in the form of p-E
The student test scores for a nationwide standardized test have an unknown distribution with mean 259 and standard deviation 38 points. A sample, with size n=55, was randomly drawn from the population. Using the Central Limit Theorem for Means, what is the mean for the sample mean distribution? Provide only the number with no units.
A simple random sample of size n=24 is drawn from a population that is normal distributed. The sample mean is found to be x bar= 66 and the sample standard deviation is found to be s= 16.construct a 98% confidence interval about the population mean. (Round to two decimals)
Suppose a confidence interval for pi - P2 was found to be (-0.15, -0.12). What is suggested by this interval?
Express the confidence interval (35%,44%)(35%,44%) in the form of ˆp±Ep^±E.? % ± ?
find out the confidence interval for population proportion for given data [ 4 decimal places ] population standard deviation =4 xbar = 123.5 sample size= 100 c= 0.95
We want to estimate the mean number of chocolate chips per cookie for a large national brand. How many cookies would have to be sampled to estimate the true mean number of chocolate chips per cookie, within 2 chocolate chips and the 98% confidence? Assume that s=11.2 chocolate chips, from a prior sample
Zα/2 for the 96% confidence interval
An SRS of 100 postal employees found that the average time these employees had worked for the postal service was x = 7 years with standard deviation s = 2 years. Assume the distribution of the time the population of employees have worked for the postal service is approximately Normal. A 95% confidence interval for the mean time u the population of postal service employees have spent with the postal service is 7 + 0.525 7 + 0.4 7 + 2 7 + 1.984 b
2) The average life of a special rechargeable battery for a Calculator that performs 45 functions is 700 hours, with A standard deviation of 37 hours. A sample of 50 batteries is randomly selected, what percentage of the batteries will last more then 705 hours?
Apply Chebyshev’s rule with k = 3 to verify that at least 89% of the observations in any data set lie within three standard deviations to either side of the mean, that is, between x - 3s and x + 3s.

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS

c.) What is the positive critical value that corresponds to an 99% confic hundredth) ta/2 %3! d.) What is the 99% confidence interval estimate of the mean time for hi