The Godess of Weather flips a coin twice to determine the weather in January. Her coin is unfair, with 60% to yield

a head and 40% to yield a tail. If she gets two heads, January has 80% to not snow heavily; if she gets a head and a

tail, January has 50% to snow heavily; if she gets two tails, January has 90% to snow heavily. If January and February

both snows heavily, TD Insurance company has a probability of 90% to have a loss in the first quarter. If January snows

heavily, February tends to snow heavily as well, in fact, it stops snowing heavily with only a chance of 15%. What is the

chance that January and February both snow heavily and TD Insurance have a loss in the first quarter?

Barstow Manufacturing Company has two service departments — product design and engineering support, and two production departments — assembly and finishing. The distribution of each service department's efforts to the other departments is shown below:

The direct operating costs of the departments (including both variable and fixed costs) were as follows:

The total cost accumulated in the assembly department using the reciprocal method is (calculate all ratios and percentages to 4 decimal places, for example 33.3333%, and round all dollar amounts to the nearest whole dollar):

A developer wants to know if the houses in two different neighborhoods were built at roughly the same time. She takes a random sample of six houses from each neighborhood and finds their ages from local records. The accompanying table shows the data for each sample​ (in years). Assume that the data come from a distribution that is Normally distributed. Complete parts a through c below.

Find a 95​% confidence interval using the pooled degrees of freedom.

A 95% confidence interval for the mean difference in ages of houses in the two neighborhoods was (__,__).

Is this result different from the result of the​ pooled-t confidence​ interval? Explain why or why not.

This discussion board will give you the opportunity to demonstrate your understanding of one function of the integumentary system and how it interacts with other body systems to contribute to homeostasis for the organism. Think about the functions of the integumentary system. Along with the barrier function of the skin, there are many other important functions that the integumentary system contributes to. Injury or pathology to the integumentary system often causes a potential disruption to the ability of a person to maintain homeostatic conditions. You will pick two of the following conditions and provide the following for each: the layers and structures of the integumentary system that are involved, the integumentary system functions that are lost or inhibited, and the compensatory steps that the body will take to overcome the deficit. It is fully expected that you will have to do some independent research to provide a robust response to this prompt - it would be in your best interest to start this assignment early!

Choose two of the following conditions to discuss:

Decubitis ulcers (i.e. bedsores)

Shingles

Second degree burn covering the majority of the thorax

Necrotizing fasciitis

Hyperhidrosis

Quiz 9 STUDY QUESTIONS

1 For each of the following statements, indicate whether the statistical association is likely the result of chance, confounding. bias. or A case-control study showed that a strong association exists between birth order and Down syndrome.

b. A case-control study lound a positive association between self-reported chest radiographs during pregnancy and breast cancer. A randomized clinical trial found that drug A versus placebo did not significantly improve 10-year survival (RR = 0.35; 95% confidence interval, 01455014 A cohort study found no statistical association between smoking and pancreatic cancer (RR = 1: = P value = 0.85). A hospital-based case-control study identified a strong association between oral contraceptives and thromboembolism. Many doctors suspected the association and hospitalized some women who used oral contraceptives for evaluation

2 Match the following methods for minimizing chance, bias, and confounding in an experimental study Chance Bias Confounding a Randomization b. Blind c. Increase sample size

3. Recall the causal criteria presented by Sir Austin Brad- ford Hill in 1965 Discuss these criteria in the context of smoking and lung cancer.

4.Suppose you suspect based on descriptive epidemiol ogy that college students who perform better aca demically are more likely to have an office job and be obese 10 years after graduation. You decide to select 500 graduating seniors randomly and classify them according to grade point average as high versus low (where the cut point is at the median of the GPAs for these students). The resulting 2 x 2 contingency table is as follows: Below is a table GPA High Low Total Obese at 10 Years Yes 60 40 100 No 190 210 400 Total 250 250 500 Apply this data to the six steps of hypothesis.

5. Match the following Predisposing factors Enabling factors Precipitating factors Reinforcing factors a Facilitate manifestation of a disease le housing) Associated with definitive onset of disease (eg. toxin Increase level of susceptibility m a host of age) d. Aggravate presence of disease leg repeated exposure)

6. Compare a direct causal association with an individual causal association. Use specific examples

7. Define and compare the difference between static inference and causal inference. 8. Why might studying a sample be preferred population? A component cause is also called which of the following?

a. Risk factor b. Web of causation c. Epidemiologic triangle

d. Each of the above are component causes 10 Webs of causation play a more useful role when one is trying to describe disease etiology for which type of disease? a. Acute b. Infectious C. Chronic d. Two of the above.

3. A package delivery service adopted a new dispatching system to try to reduce the total mileage required by its truck fleet to make deliveries. The new system would be worth the cost if it reduced the fleet mileage by more than 10% from its current level of 2200 miles per day. The miles required for each of the 66 days under a trial of the new system are recorded in column 1 of the Excel data file named “Package Delivery”. Using the given data and 7% level of significance, please conduct an appropriate test to determine if the new dispatching system is worth its cost. Based on your results, do you think the new system is worth its cost? Show the necessary steps and explain your conclusion

Caro Manufacturing has two production departments, Machining and Assembly, and two service departments, Maintenance and Cafeteria. Direct costs for each department and the proportion of service costs used by the various departments for the month of August follow:

Assume that both Machining and Assembly work on just two jobs during the month of August: CM-22 and CM-23. Costs are allocated to jobs based on machine-hours in Machining and labor-hours in Assembly. The number of labor- and machine-hours worked in each department are as follows:

Required:
How much of the service department costs allocated to Machining and Assembly in the direct method should be allocated to Job CM-22? How much should be allocated to Job CM-23? (Round "Department rate" to 2 decimal places.)

Caro Manufacturing has two production departments, Machining and Assembly, and two service departments, Maintenance and Cafeteria. Direct costs for each department and the proportion of service costs used by the various departments for the month of August follow:

Assume that both Machining and Assembly work on just two jobs during the month of August: CM-22 and CM-23. Costs are allocated to jobs based on machine-hours in Machining and labor-hours in Assembly. The number of labor- and machine-hours worked in each department are as follows:

Required:
How much of the service department costs allocated to Machining and Assembly in the direct method should be allocated to Job CM-22? How much should be allocated to Job CM-23? (Round "Department rate" to 2 decimal places.)

Caro Manufacturing has two production departments, Machining and Assembly, and two service departments, Maintenance and Cafeteria. Direct costs for each department and the proportion of service costs used by the various departments for the month of August follow:

Assume that both Machining and Assembly work on just two jobs during the month of August: CM-22 and CM-23. Costs are allocated to jobs based on machine-hours in Machining and labor-hours in Assembly. The number of labor- and machine-hours worked in each department are as follows:

Required:
How much of the service department costs allocated to Machining and Assembly in the direct method should be allocated to Job CM-22? How much should be allocated to Job CM-23? (Round "Department rate" to 2 decimal places.)

Salsa Grocery has two divisions. One division, STORES, sells groceries through traditional grocery stores. The second division, CYBER, was formed two years ago and sells groceries through an online grocery ordering service. Data for the past year for the two divisions are as follows.

a. Evaluate the two divisions in terms of EVA.