A score at the 67th percentile of an approximately normal distribution is how many standarddeviations from the mean?(A) 1.84 standard deviations below the mean(B) 0.75 standard deviations below the mean(C) 0.44 standard deviations below the mean(D) 0.44 standard deviations above the mean(E) 0.75 standard deviations above the mean

The question is asking us to determine how many standard deviations away from the mean a score at…

Answered: A score at the 67th percentile of an…

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

Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 13. Use the empirical rule to determine the following. (a) What percentage of people has an IQ score between 74 and 126? (b) What percentage of people has an IQ score less than 74 or greater than 126? (c) What percentage of people has an IQ score greater than 113? (a)% (Type an integer or a decimal.) (b)% (Type an integer or a decimal.) (c) % (Type an integer or a decimal.)
Need help urgent
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 20. Use the empirical rule to determine the following. (a) What percentage of people has an IQ score between 80 and 120? (b) What percentage of people has an IQ score less than 40 or greater than 160? (c) What percentage of people has an IQ score greater than 140? (a) 68 % (Type an integer or a decimal.) (b) 99.7 % (Type an integer or a decimal.) (c) 32 % (Type an integer or a decimal.) 10 C. m- 105 Cla m-3 Enter your answer in each of the answer boxes. P Type here to search Esc
The average playing time of music albums in a large collection is 36 minutes, and the standard deviation is 3 minutes. (a) What value is 1 standard deviation above the mean? 1 standard deviation below the mean? What values are 2 standard deviations away from the mean? 1 standard deviation above the mean 1 standard deviation below the mean 2 standard deviations above the mean 2 standard deviations below the mean (b) Without assuming anything about the distribution of times, at least what percentage of the times are between 30 and 42 minutes? (Round the answer to the nearest whole number.) At least 75 % 39 33 42 30 (c) Without assuming anything about the distribution of times, what can be said about the percentage of times that are either less than 27 minutes or greater than 45 minutes? (Round the answer to the nearest whole number.) No more than 11 % (d) Assuming that the distribution of times is approximately normal, about what percentage of times are between 30 and 42 minutes? (Round…
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 12. Use the empirical rule to determine the following. (a) What percentage of people has an IQ score between 76 and 124? (b) What percentage of people has an IQ score less than 64 or greater than 136? (c) What percentage of people has an IQ score greater than 124?
3
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 20. Use the empirical rule to determine the following. (a) What percentage of people has an IQ score between 60 and 140? (b) What percentage of people has an IQ score less than 40 or greater than 160? (c) What percentage of people has an IQ score greater than 160? (a) % (Type an integer or a decimal.) (b) % (Type an integer or a decimal.) (c) % (Type an integer or a decimal.)
Arandom sample of 77 eighth grade students scores on a national mathematics assessment test has a mean score of 266. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 260. Assume that the population standard deviation is 37. At a= 0.13, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify Hg and H,. Choose the correct answer below. OB. Hg u 260 D. Họ: us 260 H, > 260 (claim) O. H: u= 260 (claim) H, u> 260 OF. H: pa 260 (claim) H, p 260 (claim) (b) Find the standardized test statistic z, and ts corresponding area 2= 1.42 (Round to two decimal places as needed) (c) Find the P-value. Pvalue =D(Round to three decimal places as needed.)
scores on a statistics final in a large class were normally distributed with a mean of 76 and a standard deviation of 11 Round the answers to at least two decimals. (a) Find the 25thpercentile of the scores. (b) Find the 63rd percentile of the scores. (c) The instructor wants to give an A to the students whose scores were in the top 11%of the class. What is the minimum score needed to get an A?
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 10.Use the empirical rule to determine the following. (a) What percentage of people has an IQ score between 90 and 110? (b) What percentage of people has an IQ score less than 70 or greater than 130? (c) What percentage of people has an IQ score greater than130?
qu(1): here a sample of a depression inventory 58,47,52, 61,59,56,49 (a) what is the mean? (b) what is the median? (c) what is the standard deviation ? sum of (x**2) = (sum of(x)) = standard deviation = round your answer to two decimal places
To estimate the mean score ?μ of those who took the Medical College Admission Test on your campus, you will obtain the scores of an SRS of students. From published information you know that the scores are approximately Normal with standard deviation about 6.6.6.6. You want your sample mean ?⎯⎯⎯x¯ to estimate ?μ with an error of no more than 0.8 points0.8 points in either direction. What standard deviation must x¯ have so that 99.7% of all samples give an x¯ within 0.8 points of μ? Use the 68-95-99.7 rule. Give your answer to four decimal places. standard deviation of x¯: How large an SRS do you need in order to reduce the standard deviation of x¯ to the value you found? Give your answer rounded up to the nearest whole number. SRS size:

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