KSaveData on 4500 college graduates show that the mean time required to graduate with a bachelor's degree is 6.38 years with a standard deviation of 1.39 years. Use asingle value to estimate the mean time required to graduate for all college graduates. Also, find the 95% confidence interval for the mean time required to graduate forall college graduates.The estimate for the mean time required to graduate for all college graduates is 6.38 years.(Round to two decimal places as needed.)Find the 95% confidence interval for the mean time required to graduate for all college graduates.years <μ< years 4(Round to two decimal places as needed.)

given;sample size(n) = 4500mean(x¯)=6.38 yearsstandard deviation(s) =1.39 yearsconfidence level 95%…

Answered: Data on 4500 college graduates show…

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

IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. According to the Empirical Rule, what percentage of IQ scores are between 70 and 130?
The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random sample of 155 adult males, the mean pulse rate is 69.9 bpm and the standard deviation is 11.4 bpm. Find the value of the test statistic. The value of the test statistic is enter your response here. (Round to two decimal places as needed.
Scores on a standardized exam are known to follow a normal distribution with standard deviation 14. A researcher randomly selects 135 students and computes their average score. He reports that the mean score is 73.9, with a margin of error of 1.756. How confident are you that the mean score for all students taking the exam is in the interval (72.144, 75.656)? Confidence=
The time needed for college students to complete a certain paper and pencil maze follows a Normal distribution, with a mean of 80 seconds and a standard deviation of 6 seconds. You wish to see if the mean time is changed by meditation, so you have a group of 8 college students meditate for 30 minutes and then complete the maze. It takes them an average of = 74 seconds to complete the maze. Use this information to test the hypotheses H 0: = 80, H a: 80 at significance level = 0.02. You conclude that: a. H0 should not be rejected. b. Ha should be accepted. c. H0 should be rejected. d. this is a borderline case and no decision should be made. The scores on the Wechsler Adult Intelligence Scale are approximately Normal, with = 100 and = 11. The proportion of adults with scores above 110 is closest to: a. 0.14. b. 0.25. c. 0.33. d. 0.18.
The combined SAT scores for the students at a local high school are normally distributed with a mean of 863 and a standard deviation of 156. The local college requires a minimum SAT score of 877 before students are considered for admision.What percentage of students from this school have SAT scores that do not satisfy the local college's admission requirement? Enter your answer as a percent accurate to 2 decimal places.
The annual per capita consumption of oranges (in pounds) in the United States can be approximated by a normal distribution. The mean annual per capita of oranges is 19.2 with a standard deviation of 4 pounds. what annual per capita consumption of oranges represents the 5th percentile?
Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of man who is 72.2 inches tall. (to 4 decimal places)
Random samples of size 46 are drawn from a population with mean 161.9 and standard deviation 16.1. Find the mean and the standard deviation of the sample mean. Round to four decimal places.Mean = Standard Deviation = Enter your answer as a number accurate to 4 decimal places.
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.1 years, and standard deviation of 2.2 years. The 8% of items with the shortest lifespan will last less than how many years? Please show your answer to one decimal place. # of years =
The combined SAT scores for the students at a local high school are normally distributed with a mean of 863 and a standard deviation of 156. The local college requires a minimum SAT score of 877 before students are considered for admision.What percentage of students from this school have SAT scores that do not satisfy the local college's admission requirement? Enter your answer as a percent accurate to 2 decimal places.
On an exam, there is a mean score of 80 with a standard deviation of 12 If each exam is multiplied by 1.2, what will mean and standard deviation be? Please show computation

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