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write my assignment 28448

Hi, I am doing this problems now, and want to check the solution. Thanks,1. Hexavalent chromium has been identified as an inhalation carcinogen and an air toxin of concern in a number of different locales. The article “Airborned Hexavalent Chromium in Southwestern Ontario” (J. of Air and Waste Mgmnt. Assoc., 1997: 905-910) gave the accompanying data on both indoor and outdoor concentration (nanograms/m^3) for a sample of houses selected from a certain region.House————————————————–9—————————————————Indoor .07 .08 .09 .12 .12 .12 .13 .14 .15Outdoor .29 .68 .47 .54 .97 .35 .49 .84 .86—————————————————House————————————————————————————————-.18 .18 .18 .18 .19 Outdoor .28 .32 .32 1.55 .66 .29 .21 1.02———————————————–House———————————————————————————————–.28 Outdoor 1.59 .90 .52 .12 .54 .88 .49 1.24————————————————House———————————————————————————————–.39 .40 .45 .54 .62 Outdoor .48 .27 .37 1.26 .70 .76 .99 .36————————————————a. Calculate a confidence interval for the population mean difference between indoor and outdoor concentrations using a confidence level of 95%, and interpret the resulting interval.b. If a 34th house were to be randomly selected from the population, between what values would you predict the difference in concentrations to lie?c. Construct the 95% confidence intervals for the indoor and for the outdoor true concentration. Do these CIs overlap, and what does that imply about the hypothesis test in part(a)? Write a paragraph justifying your answer. Problem 2Back to the ladybugs — recall that aphid infestation of fruit trees is usually controlled either via pesticides or via ladybug innundation. In a particular area, 2 different (and well isolated) groves, with 15 fruit trees each, are selected for an experiment. The trees in both groves are of the same age, roughly the same size, and can be assumed to be independent. One grove is sprayed with pesticides, and one is flooded with ladybugs. The fruit yield (in pounds) for each tree is given below:Pesticide trees:55.57109 36.50319 47.80090 33.34822 36.1625135.28337 41.50154 44.18931 40.81439 33.8864844.90427 49.97089 22.85414 27.84301 38.49843Ladybug trees:45.44505 35.52320 46.97865 45.76921 41.6621654.69599 58.77678 49.08538 48.53812 70.1713751.86253 39.59365 42.10194 47.39945 39.04648a) Assume that these two samples come from a normal distribution. Find the sample means of yields for the two groves, and provide the two 95% confidence intervals for the true mean yields for trees under the two treatments.b) What are the sample variances for the yields in the two groves? Test the equality of these two variances using significance level of 5%. (Write out the hypotheses, compute the test statistic, p-value, and write out the conclusion)c) Depending on your answer in (b), test the equality of the two mean yields. (Write out the hypotheses, compute the test statistic, p-value, and write out the conclusion)

 

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write my assignment 281

You are the manager of the only firm worldwide that specializes in exporting fish products to Japan. Your firm competes against a handful of Japanese firms that enjoy a significant first-mover advantage. Recently, one of your Japanese customers has called to inform that the Japanese legislature is considering imposing a quota that would reduce the number of pounds of it fish products you are permitted to ship to Japan each year. Your first instinct is to call the trade representative of your country to lobby against the import quota. Is following through with your first instinct necessarily the best decision? Explain.

 

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write my assignment 13274

Hi, need to submit a 2500 words essay on the topic Creation and distribution of goods and services.

Richard Strong put forward the argument that the proposals would allow the corporation to develop two focused and separate market and product strategies for the market segments. The initial response was guarded, with its advantage being that it would allow the corporation to clarify positioning of its products while aiding Aldus to establish a unique and strong company identity in both market segments. However, the corporation had based its success via the offering of a single product line bridging creative professionals and business. This paper aims to evaluate this proposal. Strong’s proposal to alter the positioning strategy for Aldus As PageMaker’s sophistication grew to meet the high-end user’s evolving needs, the product became more unattractive to the business segment that was not as sophisticated. The primary distribution channels lacked sophistication to lend support to these high-end users, leading Strong to believe that the corporation faced the danger of being unable to serve these two markets. The situation was made worse in the European market by Apple Macintosh’s weak position, which made Aldus depend more PageMaker’s MS-DOS version.

 

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write my assignment 25613

I need the answers to c and d and I need to see the work and I need it as perfect as possible

The Judy Gray Income Tax Service is analyzing its customer service operations during the month prior to the April filing deadline.  On the basis of past data, it has been estimated that customers arrive according to a Poisson process with an average arrival rate of one every 12 minutes.  The time to complete a return for a customer is exponentially distributed with a mean of 10 minutes.  Assume that the customer has all of the information needed for Judy to complete the tax return at this one visit.  When the person is being helped, she meets with Judy in her office.  If the individual is waiting for help, she will be in the waiting area.  Based on this information, answer the following questions. 

Do not round your results to integer numbers.

a) On the average, how many customers should the waiting area be designed to hold? 

Average number of people

L q = λ2/ µ (µ – λ)

L q = 102/ 12(12 – 10)

L q = 102/ 12(2)

L q = 100/ 24

L q = 4.17 = 5

b) What is the probability that an arriving customer would find at least four people in the waiting area waiting for help? 

P(x; μ) = (e-μ) (μx) / x!

P(x≥4) = 0.99771

c) At this time, Judy is not going to add another person to help complete the tax returns.  If the arrival rate remains unchanged but the average time in the system must be 40 minutes or less, what would need to be changed and what would the value of the change need to be?

d) Judy is now considering adding a person to help her process the tax returns.  This person will help Judy by checking the paper work for the customers but does not work directly with any customer.  Judy believes that this will allow her (Judy) to complete the returns in six minutes 40 seconds on average.  Judy would need to pay this person $50 per hour.  Judy believes that she has to reduce her cost of the service by $15 per hour for every hour a customer is in her office either waiting for help or being helped.  Should she add this person or continue working by herself?  Base your analysis on the economics of the two options.   

 

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