Jack owns a small neighborhood convenience store and has years of data tracking the mostpopular items sold in his store in hopes that he always has the most popular items in stock.Based on historical data, Jack sells an average of 49 four-roll packages of toilet paper per monthwith a standard deviations of 7.1 packages. In March, 2020, Jack sold 76 four-roll packages oftoilet paper (which was all he had in stock).Calculate the z-score for the amount of toilet paper Jack sold in March.Report your answer to two decimal points (e.g. 2.01)

Given,mean(μ)=49standard deviation(σ)=7.1and n.of papers jack sold (X)=76

Answered: Jack owns a small neighborhood…

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

In a study of Ridge View's boys' basketball team, the average height is 68 inches and standard deviation is 4 inches. One student is 78 inches. What percentile is he in?
Sarah'sscore on the Stats midterm was 81 points. The class average was 76 and the standard deviation was 5 points. What was her z-score? z=
Kathy is a business administration major at Florida State University. She is comparing her performanceon her recent midterm exams. Kathy scored an 82 on her accounting exam and an 88 on her managementexam.The mean and standard deviations of the two exams are shown in the table below Course Mean Standard deviation Accounting 70 10 Management 90 4 a. What is the z-score on the Accounting exam? b. What is the z-score on the Management exam? c. On which of the exams did Kathy perform RELATIVELY better? EXPLAIN.
Find the z-score that corresponds to the 63rd percentile
Three potential employees took an aptitude test. Each person took a different version of the test. The scores are reported below. Pierce got a score of 71.5; this version has a mean of 62.5 and a standard deviation of 15. Vincent got a score of 309.2; this version has a mean of 294 and a standard deviation of 19. Norma got a score of 7.96; this version has a mean of 7.2 and a standard deviation of 0.4. If the company has only one position to fill and prefers to fill it with the applicant who performed best on the aptitude test, which of applicants should be offered the job?
Willie has an average (mean) of 83.2 on the first five exams. What is the least he can score in order to have an average of 85 for all six exams?
← A study commissioned by a clothing manufacturer measured the Waist Size of 250 men, finding a mean of 36.33 inches and a standard deviation of 4.02 inches. To explore how the mean might vary from sample to sample, they simulated by drawing many samples of size 2, 5, 10, and 20, with replacement, from the 250 measurements. The summary statistics for these simulations are shown below. Answer parts a through d below. Click the icon to view the summary statistics table. Click the icon to view the histogram of the measurements and histograms of the sample means for each simulation. a) According to the Central Limit Theorem, what should the theoretical mean and standard deviation be for each of these sample sizes? Complete the table below. (Round to three decimal places as needed.) n 2 5 10 20 Observed mean 36.314 36.314 36.341 36.339 Ask my instructor Theoretical mean Observed st. dev. 2.855 1.805 1.276 0.895 Theoretical st. dev. Summary Statistics Table n mean 36.314 2 st. dev 2.855…
A machine makes sticks of butter whose average weight is 4.0 ounces. The SD of the weights is 0.05 ounces. There is no trend or pattern to the data. There are 4 sticks to a package. (1 pound = 16 ounces) A store buys 100 packages of butter. Estimate the chance that they get 100 pounds of butter, to within 2 ounces.
Abby's score of 704 on the math portion of the 2002 GRE exam placed her in the 84th percentile rank. The standard deviation of this exam was 141. If the test scores are normally distributed, what was the mean score of the 2002 test takers? write your answer with one decimal place.
Two 2017 high school graduates want to compare their results on college entrance exams. Alex scored 1401 on the SAT, and Olivia scored 32 on the ACT. For 2017, the mean SAT score was 1060, and the standard deviation was 195. That same year, the ACT had a mean score of 21.0 and a standard deviation of 5.6. Calculate a z-score for each student, determine which student had the better test score, and explain why.
The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances that someone is earning more than $20 an hour?
Find the value of so that 92.3% of the data lies to the right of it.

SEE MORE QUESTIONS

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