Ex 1: A production facility employs 20 workers on the day shift, 15 workers on the swing shift,and 10 workers on the graveyard shift. A quality control consultant is to select 6 of these workers forin-depth interviews. Suppose the selection is made in such a way that any particular group of 6 workershas the same chance of being selected as does any other group (drawing 6 slips without replacementfrom among 45).a) How many selections result in all 6 workers coming from the day shift?b) What is the probability that all 6 selected workers will be from the day shift?c) What is the probability that all 6 selected workers will be from the same shift?

Given Information: Number of workers on the day shift is 20 Number of workers on the swing shift is…

Answered: Ex 1: A production facility employs 20…

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

A sample of 3 balls is to be selected at random from an urn containing 20 balls numbered 1 to 20. Six balls are green, 4 balls are white, and 10 balls are black. How many different samples can be selected?
A production facility employs 10 workers on the day shift, 8 workers on the swing shift, and 6 workers on the graveyard shift. A quality control consultant is to select 6 of these workers for in-depth interviews. Suppose the selection is made in such a way that any particular group of 6 workers has the same chance of being selected as does any other group (drawing 6 slips without replacement from among 24). (a) How many selections result in all 6 workers coming from the day shift? selections What is the probability that all 6 selected workers will be from the day shift? (Round Pour answer to four decimal places.) (b) What is the probability that all 6 selected workers will be from the same shift? (Round your answer to four decimal places.) (c) What is the probability that at least two different shifts will be represented among the selected workers? (Round your answer to four decimal places.) (d) What is the probability that at least one of the shifts will be unrepresented in the sample…
31. You want to survey twenty of the 150 ninth graders to get their opinion on the school's new schedule. Which of the following methods is most likely to lead to a sample that is the most representative of the 150 ninth graders? A Choose 20 ninth graders from your first period class. Choose the first 20 ninth graders from a alphabetical list. C. Select 20 students at random from the ninth grade. D. Select 5 students at random from each of ninth, tenth, eleventh and twelfth grade. hp 大 %23 0% B.
A production facility employs 10 workers on the day shift, 8 workers on the swing shift, and 6 workers on the graveyard shift. A quality control consultant is to select 5 of these workers for in-depth interviews. Suppose the selection is made in such a way that any particular group of 5 workers has the same chance of being selected as does any other group (drawing 5 slips without replacement from among 24).a. How many selections result in all 5 workers coming from the day shift? What is the probability that all 5 selected workers will be from the day shift?b. What is the probability that all 5 selected workers will be from the same shift?c. What is the probability that at least two different shifts will be represented among the selected workers?d. What is the probability that at least one of the shifts will be unrepresented in the sample of workers?
An advertising agency wants to know whether the no of column inches of classified ad carried by 2 competing newspapers is equal. The no of column inches appearing in both newspapers, respectively, on 20 randomly selected days follows: 663 & 725, 713 & 806, 626 & 620, 682 & 626, 639 & 595, 651 & 614, 769 & 744, 701 & 719, 723 & 680, 670 & 639, 665 & 602, 639 & 657, 694 & 624, 614 & 614, 651 & 583, 632 & 682, 739 & 657, 657 & 639 & 775 & 745. Use signed-rank test at 0.01 level of sig to test to test whether or not newspaper 1 & 2 carry equal amount of classified ad. What is the z value and decision?
Q 4: Mr. Ahmed who is a manager at PVR Multiplex Muscat has conducted a survey to investigate the number of people visited the theatre in the last 30 days. The number of people visited the theatre in the last 30 days are: 30, 36, 39, 37, 36, 54, 38, 33, 37, 33, 33, 36, 32, 48, 42, 38, 36, 35, 30, 33, 39, 37, 33, 36, 30, 39, 44, 32, 44 and 50. Find out the grouped frequency distribution using 5 classes. Which graph will be suitable to present the grouped frequency distribution? Give reasons to your answer Cumulative frequency and relative frequency are same. Discuss critically
6. To promote domestic consumption, Country A's government wants to determine the impact on household annual expenditures on consumption items if small stimulus checks were sent monthly over a one year period. To determine if these small stimulus checks would increase household expenditures on consumption items, it chose five households at random, determined their annual expenditure on consumption items for the year before and sent the stimulus checks for a year. The table below shows total amount of annual expenditure on consumption items by the households before and after receipt of the checks. Based on these observations, determine whether there would be a statistically significant difference in the mean annual expenditure on consumption items for the entire population of the Country A if this policy were adopted for the entire country. Use a level of significant of a = .01. Recipient 1 2 3 4 5 Before Receipt ($, in thousands) 63 38 70 65 62 After Receipt ($, in thousands) 65 42 68…
A new batch of processors are to be tested for effciency. The same specific set of tasks are run by each of a set of randomly selected 10 processors, and the recorded execution times for each are as follows (rounded, in seconds): 7,11,9,7,13,10,8,9,11,10,8,12,8,9,10 Answer the following questions. The answers will be numbers or letters (not case senisitive): (a) Write the five point summary of this data set: ( (b) The interquartile range of this data set is (c) Are there any outliers? Aswer Y for yes and N for no. (d) Is this data set left skewed (L), right skewed (R) or symmetric? Answer L, R or S: (e) The mean of this data set is and the sample standard deviation is Give your answers with EXACT two decimals. DO NOT ROUND. (f) Based on this data and using sample standard deviation as an estimator, a 90% confidence interval for the mean execution time is: (
a researcher in a large organisation wishes to study sickness absence among its employees. the organisation has a large number of branches. each keeps its records of its sickness leave.after a sample was collected it became apparent that the branches fell into three natural groups in terms of sales small, medium and large.from the data of all the branches the researcher found that 210 randomly selected staff 90 worked in small branches 36 in medium branches and the rest worked in large branches. in total 96 of the selected staff had no sickness day off of which 52 worked in small branches and 29 worked in large branches. form a table showing this information clearlya researcher in a large organisation wishes to study sickness absence among its employees. the organisation has a large number of branches. each keeps its records of its sickness leave.after a sample was collected it became apparent that the branches fell into three natural groups in terms of sales small, medium and…
A production facility employs 10 workers on the day shift, 8 workers on the swing shift, and 6 workers on the graveyard shift. A quality control consultant is to select 6 of these workers for in-depth interviews. Suppose the selection is made in such a way that any particular group of 6 workers has the same chance of being selected as does any other group (drawing 6 slips without replacement from among 24). (a) How many selections result in all 6 workers coming from the day shift? selectionsWhat is the probability that all 6 selected workers will be from the day shift? (Round your answer to four decimal places.)(b) What is the probability that all 6 selected workers will be from the same shift? (Round your answer to four decimal places.)(c) What is the probability that at least two different shifts will be represented among the selected workers? (Round your answer to four decimal places.)(d) What is the probability that at least one of the shifts will be unrepresented in the sample of…
Management of a company that produces a medical device has carefully selected and screened 220 finished items (packaged, ready to ship). The team agrees that the sample contains 33 defective items, all for various visual defects on the package such as crooked labels, poor seal, errant marks on package, etc. The items are then given to an inspector for classification into “defective” and “non-defective” piles. The inspector ends up rejecting 9 non-defective items, and accepting 11 defective items. The inspector classifies the remaining items in the sample correctly. Find the following (answer as a probability, NOT a percentage. Use 3 decimal places. Notice that alpha = 9/187, Beta = 11/33, and p = 33/220. P(inspector accepts the item and its actually non-defective) =
Management of a company that produces a medical device has carefully selected and screened 220 finished items (packaged, ready to ship). The team agrees that the sample contains 33 defective items, all for various visual defects on the package such as crooked labels, poor seal, errant marks on package, etc. The items are then given to an inspector for classification into “defective” and “non-defective” piles. The inspector ends up rejecting 9 non-defective items, and accepting 11 defective items. The inspector classifies the remaining items in the sample correctly. Find the following (answer as a probability, NOT a percentage. Use 3 decimal places: What is the proportion of accepted items that are actually defective (escapes)?

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