A large insurance company maintains a central computing system that contains a variety of information about customer accounts. Insurance agents in a six-state area use telephone lines to access the customer information database. Currently, the company's central computer system allows three users to access the central computer simultaneously. Agents who attempt to use the system when it is full are denied access; no waiting is allowed. Management realizes that with its expanding business, more requests will be made to the central information system. Being denied access to the system is inefficient as well as annoying for agents. Access requests follow a Poisson probability distribution, with a mean of 47 calls per hour. The service rate per line is 25 calls per hour.

1. What is the probability that 0, 1, 2, and 3 access lines will be in use? Round your answers to 4 decimal places.
   

   j	Pj
   0
   1
   2
   3

   
   
2. What is the probability that an agent will be denied access to the system? Round your answers to 4 decimal places.
   
   
   
3. What is the average number of access lines in use? Round your answers to 4 decimal places.
   
   L =
   
4. In planning for the future, management wants to be able to handle λ = 55 calls per hour; in addition, the probability that an agent will be denied access to the system should be no greater than the value computed in part (b). How many access lines should this system have?
   
   lines will be necessary.

Dichotomous key for common skin bacteria:
I. Cells arranged in tetrads, glucose not fermented (Micrococcus)
A. Colonies have yellow pigment M. luteus
B. Colonies have red or pink pigment M. roseus

II. Cells arranged in clusters, glucose is fermented (Staphylococcus)
A. Acid produced from mannitol
1. Coagulase-positive S. aureus
2. Coagulase-negative
a. Acid produced from trehalose S. saprophyticus
b. No acid from trehalose S. capitis

B. Acid not produced from mannitol
1. Acid produced from trehalose S. saprophyticus
2. No acid from trehalose S. epidermidis

Elsa completes the in-class lab experiment on skin bacteria by inoculating a phenol red glucose tube and a mannitol salt agar plate with her skin sample. After 24 hours of incubation at 37°C, she performs a Gram stain and phenol red trehalose test on a colony of bacteria from her MSA plate. (Note: the PR trehalose test is similar to the PR glucose test, only the carbohydrate is trehalose instead of glucose).

Elsa’s lab partner, Anna, completes a similar experiment, but with slightly different results. Her initial results point her to a different direction, so instead of completing the PR trehalose test, she completes the coagulase slide test

• Use the dichotomous key on page 41 again to interpret Anna’s results. What is the name of the organism growing on her skin?

4. Is it possible that one or both students have MRSA on their skin? Explain.

2. (i) What factors must be considered to provide a safe and healthful workplace for the workers (R)?

Or What are the major factors affecting fatigue of the operator (R)?

(ii) What are the opportunities for savings through the application of methods engineering and work measurement (R)?

(iii) In the conduct of operations analysis, explain the importance of the (1) process of manufacture, and (2) set-up and tools (R).

(iii) State the basic principles of motion economy for the “use of the human body” (R).

(iv) State the body members involved in the five classifications of movements. Explain the concept that all motions should be made at the lowest classification of movements (R). Explain difference between the flow process chart and the flow diagram?

(v) State briefly the macroscopic approaches to making improvements in the workplace (R).

Or What are the macroscopic approaches to making improvements in the work place with particular reference to: (a) physical environment, (b) physiological factors, (c) physiological factors, and (d) sociological factors?

(vi) State the manner by which the principle of motion economy can be employed in the design of tools and equipment (R).

(vii) Explain the role of methods analyst in providing a good working condition? Do working conditions appreciably affect output (R)?

Or Why should the method analyst accept as a part of his or her responsibility to provide good working condition to the operators? Do working conditions appreciably affect output? Explain (R).

(viii) What are the main uses of human machine chart? Show the basic features human machine chart, including summary form of such a chart (R).

(ix) What are the common considerations for improving working conditions? State the benefits of ideal working conditions (R)?

(x) Show the proper flow process chart symbols for the following processes: (a) move material by truck, (b) raw material in bulk storage, (c) examine material for quality, (d) material in truck waiting to be processed, and (e) mix material to proper consistency.

. A highway department executive claims that the number of fatal accidents which occur in her state does not vary from month to month. The results of a study of 170 fatal accidents were recorded. Is there enough evidence to reject the highway department executive's claim about the distribution of fatal accidents between each month?

Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Fatal Accidents :

11 19 24 16 11 7 7 17 9 19 18 12

State the null and alternative hypothesis.

What does the null hypothesis indicate about the proportions of fatal accidents during each month?

State the null and alternative hypothesis in terms of the expected proportions for each category.

Find the value of the test statistic. Round your answer to three decimal places.

Find the degrees of freedom associated with the test statistic for this problem.

Find the critical value of the test at the 0.01 level of significance. Round your answer to three decimal places.

Make the decision to reject or fail to reject the null hypothesis at the 0.01 level of significance.

State the conclusion of the hypothesis test at the 0.01 level of significance.

Questions in Accounting.

1. Choose an adjustment from the Operating Activities section using the indirect method and explain why you would increase or decrease net income to arrive at cash.

2. What are noncash activities? Where are they reported?

In this topic, you'll do a calculation in RStudio to demonstrate the difference between using the paired and unpaired methods to analyze a difference of means. As an example data set, we'll use the county data set from the openintro package. This contains observations of several variables for each county in the USA, but we'll focus on two: pop2000, the county's population in the 2000 census, and pop2010, the population in the 2010 census.

Our goal is to calculate a 95% confidence interval for the difference between log10(pop2000) and log10(pop2010).
In R, log10 is the base-10 logarithm (I'll explain at the end of the prompt why we look at logs instead of raw numbers).
Follow the following procedure:

Use sample() to select 250 rows at random from the county data set. Then, using your sample of 250 rows, calculate a 95% confidence interval for the difference in two ways:

1. by treating the two censuses as paired samples, similar to the procedure covered in section 5.2.(paired data covered in 5.2)
2. by treating the two censuses as independent samples, using the procedure covered in section 5.3.(difference of two means covered in 5.3)

Note: you may use the same degrees of freedom, 249, for each procedure, instead of using the complicated formula from section 5.3 for the independent sample. At this sample size, the difference will be negligible.

Include in your post:
1. the point estimate you got in each procedure
2. the standard error you got in each procedure
3. the confidence interval you got in each procedure

Comment briefly on the difference you see. In each case, are you able to conclude with 95% confidence that the population increased from 2000 to 2010 (i.e. that the difference is greater than zero)?

Why we use logs here: Populations tend to grow or shrink by percentages, so looking at absolute differences would not give a very good picture of the changes. In particular, the same percentage growth in a county of 30,000 looks very different in a county of 3 million. Taking logs converts multiplication to addition, which ensures we are looking at relative differences and puts large and small counties on the same scale

1. List the three sections of the Statement of Cash Flows and briefly explain what activities are included in each section.

2. What can creditors, investors, and other users learn from the analysis of the cash flow statements?

3. Explain why depreciation expense, depletion expense, and amortization expense are added to net income in the operating activities section of the statement of cash flows when using the indirect method.

4. Leather Shop earned net income of $57,000 after deducting depreciation of $5,000 and all other expenses, Current assets decreased by $4,000, and current liabilities increased by $8,000. How much was Leather Shop's cash provided by operating activities (indirect method)?

5. How does the direct method differ from the indirect method?

Sixteen randomly chosen people suffering from excess weight are placed on a year-long exercise regimen and their weights before and after are compared. The claim is that this exercise regimen will allow participants to lose an average of at least 20 lbs in a year. After one year, the weight losses for each participant were measured. The sample data were plotted and found to follow an approximately Normal distribution with no outliers. The average weight loss in this group was 24.7 lbs. with a sample standard deviation of 12.4 lbs. (Please only answer one part at a time to give other students a chance to answer as well! Start with the first one!) 1. Explain the circumstances under which it is appropriate to use a z-procedure and under which circumstances one should use a t-procedure. What is the appropriate procedure to use in this case? 2. State the null hypothesis and the alternative hypothesis for this test. Is it one-sided or two-sided? 3. What is the degree of freedom of this statistical test? 4. Calculate the test statistic for this scenario. 5. Based on these results, can we conclude at the 5% significance level that the exercise regimen produces the claimed average weight loss? 6. What about the 10% significance level?

Give some examples of mass-spring important in everyday life describe why it would be important to understand the amplitude, period and frequency of these systems. Did this project change the way you think about how trigonometry can be applied to real world? state what ideas changed and why. If this project did not change the way you think, write how this project gave further evidence to support your existing opinion about applying trigonometry. Be specific.

Provide three different audit procedures you can use to verify that accumulated depreciation is reasonable and accurate when auditing PPE. Please provide detail (e.g. simply “Recalculation” is not an acceptable answer, please provide detail on how this is performed).