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Get college assignment help at uniessay writers The time it takes a worker on an assembly line to complete a task is exponentially distributed with a mean of 8 minutes. What is the probability that it will take a worker less than 4 minutes to complete the task (to 4 decimals)?

Parts being manufactured at a plant are supposed to weigh 40 grams. Suppose the distribution of weights has a Normal distribution with mean 40 grams and a standard deviation 2 grams. Quality control inspectors randomly select 16 parts, weigh each, and then compute the sample average weight for the 16 parts. The sampling distribution of the sample mean a. is exactly Normal with mean 40 grams and standard deviation 0.5 grams. b. is approximately Normal with mean 40 grams and standard deviation 0.5 grams. c. is meaningless in this problem because only one sample is being selected. d. cannot be determined because the sample size (16) is fairly small.

A researcher studying the effect of price cuts on consumers’ expectations makes up two different histories of the store price of a hypothetical brand of laundry detergent for the past year. Eight students in a class view one or the other price history on a computer. Some students see a steady price, while others see regular sales that temporarily cut the price. Students are asked the price they would expect to pay. The names of the eight subjects follow. 1. Franklin 2. James 3. Wright 4. Edwards 5. Rust 6. Walsh 7. Gofberg 8. Williams Using the following list of random digits: 41842 81868 71035 09001 43367 49497. Start at the beginning of this list and use single-digit labels to assign the first four subjects selected to have the steady price group and the remaining four to the fluctuating price group. The subjects assigned to the fluctuating price group are

In a random sample of 100 claims filed against an insurance company writing collision insurance on cars, 30 exceeded $1,200. What can we say with 99% confidence about the maximum error, if we use the sample proportion as an estimate of the true proportion of claims filed against this insurance company that exceed $1,200?

d the â��JET Copiesâ�� Case Problem on pages 678-679 of the text. Using simulation estimate the loss of revenue due to copier breakdown for one year, as follows: In Excel, use a suitable method for generating the number of days needed to repair the copier, when it is out of service, according to the discrete distribution shown. In Excel, use a suitable method for simulating the interval between successive breakdowns, according to the continuous distribution shown. In Excel, use a suitable method for simulating the lost revenue for each day the copier is out of service. Put all of this together to simulate the lost revenue due to copier breakdowns over 1 year to answer the question asked in the case study. In a word processing program, write a brief description/explanation of how you implemented each component of the model. Write 1-2 paragraphs for each component of the model (days-to-repair; interval between breakdowns; lost revenue; putting it together). Answer the question posed in the case study. How confident are you that this answer is a good one? What are the limits of the study? Write at least one paragraph. JET Copies James Banks was standing in line next to Robin Cole at Kleckoâ��s Copy Center, waiting to use one of the copy machines. â��Gee, Robin,I hate this,â��he said.â��We have to drive all the way over here from Southgate and then wait in line to use these copy machines. I hate wasting time like this.â�� â��I know what you mean,â��said Robin.â��And look whoâ��s here.A lot ofthese students are from Southgate Apartments or one ofthe other apartments near us. It seems as though it would be more logical ifKleckoâ��s would move its operation over to us,instead of all ofus coming over here.â�� Case Problems 679 James looked around and noticed what Robin was talking about. Robin and he were students at State University, and most of the customers at Kleckoâ��s were also students. As Robin suggested, a lot of the people waiting were State students who lived at Southgate Apartments,where James also lived with Ernie Moore.This gave James an idea,which he shared with Ernie and their friend Terri Jones when he got home later that evening. â��Look,you guys,Iâ��ve got an idea to make some money,â��James started. â��Letâ��s open a copy business! All we have to do is buy a copier, put it in Terriâ��s duplex next door, and sell copies. I know we can get customers because Iâ��ve just seen them all at Kleckoâ��s. Ifwe provide a copy service right here in the Southgate complex, weâ��ll make a killing.â�� Terri and Ernie liked the idea, so the three decided to go into the copying business. They would call it JET Copies, named for James, Ernie, and Terri. Their first step was to purchase a copier. They bought one like the one used in the college ofbusiness office at State for $18,000. (Terriâ��s parents provided a loan.) The com- pany that sold them the copier touted the copierâ��s reliability, but after they bought it,Ernie talked with someone in the deanâ��s office at State,who told him that the Universityâ��s copier broke down fre- quently and when it did,it often took between 1 and 4days to get it repaired.When Ernie told this to Terri and James,they became worried. If the copier broke down frequently and was not in use for long periods while they waited for a repair person to come fix it, they could lose a lot of revenue. As a result, James, Ernie, and Terri thought they might need to purchase a smaller backup copier for $8,000 to use when the main copier broke down. However,before they approached Terriâ��s parents for another loan, they wanted to have an estimate of just how much money they might lose if they did not have a backup copier. To get this esti- mate, they decided to develop a simulation model because they were studying simulation in one oftheir classes atState. To develop a simulation model,they first needed to know how frequently the copier might break downâ��specifically, the time between breakdowns. No one could provide them with an exact probability distribution,but from talking to staffmembers in the college ofbusiness,James estimated that the time between break- downs was probably between 0 and 6 weeks,with the probability increasing the longer the copier went without breaking down. Thus,the probability distribution ofbreakdowns generally looked like the following: Next, they needed to know how long it would take to get the copier repaired when it broke down. They had a service contract with the dealer that â��guaranteedâ��prompt repair service. However, Terri gathered some data from the college of business from which she developed the following probability distribution ofrepair times: Repair Time (days) Probability 1 .20 2 .45 3 .25 4 .10 1 .00 Finally, they needed to estimate how much business they would lose while the copier was waiting for repair. The three of them had only a vague idea of how much business they would do but finally estimated that they would sell between 2,000 and 8,000 copies per day at $0.10 per copy. However, they had no idea about what kind of probability distribution to use for this range ofvalues.Therefore,they decided to use a uniform probability distribution between 2,000 and 8,000 copies to estimate the number ofcopies they would sell per day. James,Ernie,and Terri decided that iftheir loss ofrevenue due to machine downtime during 1 year was $12,000 or more, they should purchase a backup copier. Thus, they needed to simulate the break- down and repair process for a number of years to obtain an average annual loss ofrevenue.However,before programming the simulation model,they decided to conduct a manual simulation ofthis process for 1 year to see ifthe model was working correctly.Perform this manual simulation for JET Copies and determine the loss ofrevenue for 1 year. (Bernard W. Taylor. Introduction to Management Science, 10th Edition. Prentice Hall/CourseSmart, 02/23/2009. 678 – 679).

es Banks was standing in line next to Robin Cole at Kleckoâ��s Copy Center, waiting to use one of the copy machines. â��Gee, Robin,I hate this,â��he said.â��We have to drive all the way over here from Southgate and then wait in line to use these copy machines. I hate wasting time like this.â�� â��I know what you mean,â��said Robin.â��And look whoâ��s here.A lot ofthese students are from Southgate Apartments or one ofthe other apartments near us. It seems as though it would be more logical ifKleckoâ��s would move its operation over to us,instead of all ofus coming over here.â�� Case Problems 679 James looked around and noticed what Robin was talking about. Robin and he were students at State University, and most of the customers at Kleckoâ��s were also students. As Robin suggested, a lot of the people waiting were State students who lived at Southgate Apartments,where James also lived with Ernie Moore.This gave James an idea,which he shared with Ernie and their friend Terri Jones when he got home later that evening. â��Look,you guys,Iâ��ve got an idea to make some money,â��James started. â��Letâ��s open a copy business! All we have to do is buy a copier, put it in Terriâ��s duplex next door, and sell copies. I know we can get customers because Iâ��ve just seen them all at Kleckoâ��s. Ifwe provide a copy service right here in the Southgate complex, weâ��ll make a killing.â�� Terri and Ernie liked the idea, so the three decided to go into the copying business. They would call it JET Copies, named for James, Ernie, and Terri. Their first step was to purchase a copier. They bought one like the one used in the college ofbusiness office at State for $18,000. (Terriâ��s parents provided a loan.) The com- pany that sold them the copier touted the copierâ��s reliability, but after they bought it,Ernie talked with someone in the deanâ��s office at State,who told him that the Universityâ��s copier broke down fre- quently and when it did,it often took between 1 and 4days to get it repaired.When Ernie told this to Terri and James,they became worried. If the copier broke down frequently and was not in use for long periods while they waited for a repair person to come fix it, they could lose a lot of revenue. As a result, James, Ernie, and Terri thought they might need to purchase a smaller backup copier for $8,000 to use when the main copier broke down. However,before they approached Terriâ��s parents for another loan, they wanted to have an estimate of just how much money they might lose if they did not have a backup copier. To get this esti- mate, they decided to develop a simulation model because they were studying simulation in one oftheir classes atState. To develop a simulation model,they first needed to know how frequently the copier might break downâ��specifically, the time between breakdowns. No one could provide them with an exact probability distribution,but from talking to staffmembers in the college ofbusiness,James estimated that the time between break- downs was probably between 0 and 6 weeks,with the probability increasing the longer the copier went without breaking down. Thus,the probability distribution ofbreakdowns generally looked like the following: Next, they needed to know how long it would take to get the copier repaired when it broke down. They had a service contract with the dealer that â��guaranteedâ��prompt repair service. However, Terri gathered some data from the college of business from which she developed the following probability distribution ofrepair times: Repair Time (days) Probability 1 .20 2 .45 3 .25 4 .10 1 .00 Finally, they needed to estimate how much business they would lose while the copier was waiting for repair. The three of them had only a vague idea of how much business they would do but finally estimated that they would sell between 2,000 and 8,000 copies per day at $0.10 per copy. However, they had no idea about what kind of probability distribution to use for this range ofvalues.Therefore,they decided to use a uniform probability distribution between 2,000 and 8,000 copies to estimate the number ofcopies they would sell per day. James,Ernie,and Terri decided that iftheir loss ofrevenue due to machine downtime during 1 year was $12,000 or more, they should purchase a backup copier. Thus, they needed to simulate the break- down and repair process for a number of years to obtain an average annual loss ofrevenue.However,before programming the simulation model,they decided to conduct a manual simulation ofthis process for 1 year to see ifthe model was working correctly.Perform this manual simulation for JET Copies and determine the loss ofrevenue for 1 year. (Bernard W. Taylor. Introduction to Management Science, 10th Edition. Prentice Hall/CourseSmart, 02/23/2009. 678 – 679). ” – Sent to Statistics And Probability Expert Tutor on 10/28/2010 at 4:25pm Submit your homework question or assignment here:

What is the probability that more than 6 consume caffeine and smoke?

16. A researcher wants to test whether a certain sound will make rats do worse on learning tasks. It is known that an ordinary rat can learn to run a particular maze correctly in 18 trials, with a standard deviation of 6. (The number of trials to learn this maze is normally distributed.) The researcher now tries an ordinary rat in the maze, but with the sound. The rat takes 38 trials to learn the maze. (a) Using the .05 level, what should the researcher conclude? Solve this problem explicitly using all five steps of hypothesis testing, and illustrate your answer with a sketch showing the comparison distribution, the cutoff (or cutoffs), and the score of the sample on this distribution. (b) Then explain your answer to someone who has never had a course in statistics (but who is familiar with mean, standard deviation, and Z scores).

in a random sample of 500 u.s. airways flights departing phoenix sky harbor airport in january 2008, 401 departed on time. a similar sample of southwest airlines flights showed 359 departing on time. at the .01 significance, is there evidence that the proportion of u.s. airways flights departing on time is significantly greater than the proportion of southwest airlines flights departing on time?

Final averages are typically approximately normally distributed with a mean of 70 and a standard deviation of 10.5. Your professor says that the top 9% of the class will receive an A; the next 20%, a B; the next 40%, a C; the next 21%, a D; and the bottom 10%, an F. (Give your answers correct to one decimal place.) (a) What average must you exceed to obtain an A? (b) What average must you exceed to receive a grade of C or better? (c) What average must you obtain to pass the course? (You’ll need a D or better.)

Get college assignment help at uniessay writers Based on tests of the Chevrolet Cobalt, engineers have found that the miles per gallon in highway driving are normally distributed with a mean of 32 miles per gallon and a standard deviation 3.5 miles per gallon. a. What is the probability that a randomly selected Cobalt gets more than 34 miles per gallon? b. Ten Cobalts are randomly selected and the miles per gallon for each car are recorded. What is the probability that the mean miles per gallon exceeds 34 miles per gallon? c. Twenty Cobalts are randomly selected and the miles per gallon for each car are recorded. What is the probability that the miles per gallon exceeds 34 miles per gallon? Would this result be unusual?

1) CRA CDs, Inc., wants the mean lengths of the “cuts” on a CD to be 135 seconds (2 minutes and 15 seconds). This will allow the disk jockeys to have plenty of time for commercials within each 10-minute segment. Assume the distribution of the length of the cuts follows the normal distribution with a population standard deviation of 8 seconds. Suppose we select a sample of 16 cuts from various CDs sold by CRA CDs, Inc. a. What can we say about the shape of the distribution of the sample mean? b. What is the standard error of the mean? c. What percent of the sample means will be greater than 140 seconds? d. What percent of the sample means will be greater than 128 seconds? e. What percent of the sample means will be greater than 128 but less than 140 seconds?

These questions require the use of SPSS for statistics. Can you please help me answer them? I would really appreciate it! Thanks! Stephanie

Dr. Zak also gave his students the Beck Depression Inventory (BDI). The correlation between his test and the BDI was r =.14. Evaluate this correlation. What does this correlation tell us about the relationship between these two instruments?

1. A fast food restaurant has a drive –through window and during peak lunch times can handle a maximum of 80 cars per hour with one person taking orders, assembling them, and acting as a cashier. The average sale as per order is of the order of Rs.100. A proposal has been made to add two additional workers and divide the tasks among them. One will take orders, the second will assemble them, and the third will act as cashier. With this system it is estimated that 120 cars per hour can be serviced. All workers earn the minimum wage. Use productivity arguments to recommend whether or not to change the current system.

A simple random sample of pulse rates of 40 women results in a standard deviation of 12.5 beats per minutes. The normal range of pulse rates of adults is typically given as 60 to 100 beats per minutes. If the range rule of thumb is applied to that normal range, the result is a standard deviation of 10 beats per minute. Use the sample results with a 0.05 significance level to test the claim that the pulse rates of women have a standard deviation equal to 10 beats per minute.

A Pew Research Center poll asked randomly selected subjects if they agreed with the statement that “It is morally wrong for married people to have an affair.” Among the 386 women surveyed, 347 agreed with the statement. Among the 359 men surveyed, 305 agreed with the statement. Use a 0.05 significance level to test the claim that the percentage of women who agree is different from the percentage of men who agree. Does there appear to be a difference in the way women and men feel about this issue?

Identify one aspect of care from within the National Competency Frameworks (Step 2 and 3) and critically analyse this. In the introduction you should identify which competency your analysis relates to and why this particular aspect of care is important. Any appendices should follow the ‘Reference List’. Each should be labelled with a consecutive letter, e.g. Appendix A, Appendix B, etc. and be titled. Your work should be typed in 1.5 line spacing and Arial 12 font.. The pages should be numbered with Arabic numerals (1, 2, 3, ..). All referencing in text, and in your referencing list, must use the UWE Harvard Style Critically explore the evidence and research literature surrounding this aspect of care. Relate this theory, knowledge and understanding of the aspect of care to practice and consider how and why it applies to patients in critical care. Conclude the essay by making recommendations for future practice within the identified aspect of care, linked to appropriate literature essay supply

Fifty-five percent of the applications received for a particular credit card are accepted. Among the next twelve applications, probab of rejected

Refer to Exhibit 6-2. The probability of a player weighing more than 241.25 pounds is

A group of 100 nursing students took a statistics exam. The mean score was 80 and the standard deviation was 5? Assuming that the sample was not skewed (i.e. it was normally distributed), about how many exam scores would you expect to fall between the range of 75 to 85?

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November 3, 2019