Question

A firm wants to establish how long it is supposed to take to assemble a certain...

A firm wants to establish how long it is supposed to take to assemble a certain product. A random sample of 13 employees is selected and the company measures how long it takes each of them to assemble the product rounded to the nearest minute.

Data: 5; 45; 11; 9; 14; 22; 45; 16; 30; 25; 19; 45; 15

Solve the following by hand.

You must show your work including the formulas and all your computations.

10. The variance is: ______

11. The standard deviation is: ______

12. The coefficient of variation is: ______

13. Convert the 8 into a Z-score: _______

14. Convert the 30 into a Z-Score _______

Homework Answers

Answer #1

Sample size, n =13

Sample mean, =(5+45+......+15)/13 =301/13 =23.1538

10.

The variance, s2 = =(5 - 23.1538)2 + (45 - 23.1538)2 +......... + (15 - 23.1538)2/(13 - 1) =198.3077

11.

The standard deviation, s = = =14.0822

12.

The coefficient of variation, CV =(s/)*100 =(14.0822/23.1538)*100 =60.82%

13.

Convert the 8 into a Z-score:

X =8

Z =(X - ​​​​​​)/s =(8 - 23.1538)/14.0822 = -1.0761

14.

Convert the 30 into a Z-Score:

X =30

Z =(X - ​​​​​​)/s =(30 - 23.1538)/14.0822 =0.4862

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A firm wants to establish how long it is supposed to take to assemble a certain...
A firm wants to establish how long it is supposed to take to assemble a certain product. A random sample of 13 employees is selected and the company measures how long it takes each of them to assemble the product rounded to the nearest minute. Data: 5; 45; 11; 9; 14; 22; 45; 16; 30; 25; 19; 45; 15 Solve the following by hand. You must show your work including the formulas and all your computations. 3. The mean is:...
A firm wants to establish how long it is supposed to take to assemble a certain...
A firm wants to establish how long it is supposed to take to assemble a certain product. A random sample of 13 employees is selected and the company measures how long it takes each of them to assemble the product rounded to the nearest minute. Data: 5; 45; 11; 9; 14; 22; 45; 16; 30; 25; 19; 45; 15 Solve the following by hand. You must show your work including the formulas and all your computations. 3. The mean is:...
1. Mia Salto wishes to determine how long it will take to repay a loan with...
1. Mia Salto wishes to determine how long it will take to repay a loan with initial proceeds of $5000 where annual end-of-year installment payments of $650 are required. a. If Mia can borrow at an annual interest rate of 7 %, how long will it take for her to repay the loan fully? b. How long will it take if she can borrow at an annual rate of 6 %? c. How long will it take if she has...
MATHEMATICS 1. The measure of location which is the most likely to be influenced by extreme...
MATHEMATICS 1. The measure of location which is the most likely to be influenced by extreme values in the data set is the a. range b. median c. mode d. mean 2. If two events are independent, then a. they must be mutually exclusive b. the sum of their probabilities must be equal to one c. their intersection must be zero d. None of these alternatives is correct. any value between 0 to 1 3. Two events, A and B,...
1) What are some indicators that there are assignable causes for variation in a process? I.Process...
1) What are some indicators that there are assignable causes for variation in a process? I.Process capability. II. Data patters outside of the control limits. III. Data patters within the control limits. IV. Points randomly falling above and below the control chart center line. a. II and III b. II, III, IV c. I, II, IV d. I, II, III, IV 2) The best quantitative tool to determine the cause for variation in a process is: a. ANOVA b. Correllation...
Score for this attempt: 69 out of 75 Submitted Apr 10 at 10:59am This attempt took...
Score for this attempt: 69 out of 75 Submitted Apr 10 at 10:59am This attempt took 74 minutes. Question 1 1.5 / 1.5 pts Process manufacturing usually reflects a manufacturer that produces small quantities of unique items.    True Correct!   False Question 2 1.5 / 1.5 pts On a common-sized income statement, all items are stated as a percent of total assets or equities at year-end. Correct!   False     True Question 3 1.5 / 1.5 pts A single plantwide overhead...
The differences & similarities between the federal & state court systems. 2. The structure of the...
The differences & similarities between the federal & state court systems. 2. The structure of the Washington state court system; i.e. the trial court of general jurisdiction, the intermediate appellate court, the state supreme court. 3. Remember, Washington is in the 9 th Circuit Court of Appeals. 4. Under both the Washington state and federal court system, there is one appeal as of right. Appeals to the Washington Supreme Court(in the state system), or to the U.S. Supreme Court in...
What tools could AA leaders have used to increase their awareness of internal and external issues?...
What tools could AA leaders have used to increase their awareness of internal and external issues? ???ALASKA AIRLINES: NAVIGATING CHANGE In the autumn of 2007, Alaska Airlines executives adjourned at the end of a long and stressful day in the midst of a multi-day strategic planning session. Most headed outside to relax, unwind and enjoy a bonfire on the shore of Semiahmoo Spit, outside the meeting venue in Blaine, a seaport town in northwest Washington state. Meanwhile, several members of...
QUESTION 1 ? What is the relationship between family dysfunction and schizophrenia? a. ?Research has substantiated...
QUESTION 1 ? What is the relationship between family dysfunction and schizophrenia? a. ?Research has substantiated a link between family dysfunction and schizophrenia but can't say which causes the other. b. ?Family dysfunction is a major causative factor for schizophrenia. c. ?Research has failed to substantiate a direct causal link between family dysfunction and schizophrenia. d. ?Family dysfunction plays a minor role in developing schizophrenia. 1.00000 points    QUESTION 2 ? Chuck has no life plan; he simply lives from...
3.When closing entries are made:Immersive Reader (1 Point) All ledger accounts are closed to start the...
3.When closing entries are made:Immersive Reader (1 Point) All ledger accounts are closed to start the new accounting period. All real accounts are closed but not the nominal accounts. All balance sheet accounts are closed. All temporary accounts are closed but not the permanent accounts. All permanent accounts are closed but not the nominal accounts. 4.A wholesaler is an intermediary that buys products from manufacturers or other wholesalers and sells them to consumers.Immersive Reader (1 Point) True False 5.The Merchandise...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT