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Get college assignment help at uniessay writers Repair cost of ipods are normally distributed with an average of $50 and a standard deviation of $6. Find the probability that a repair costs between $48 and $56.

See problem 2 on attached word document

How do you find bo and b1 and also how do you solve problem number 1 using bo and b1?

Management is contemplating selling the company’s products through the internet. Before a decision is made, several studies will have to be carried out. One of them is to estimate the proportion of adult Georgian who have access to the internet at home. A survey is carried out. We find that out of 800 randomly interviewed adult Georgian, 330 have access to the internet. a) Further to the survey results, would management be correct in concluding that more than 40% of adult Georgian s have access to the internet? (Carry out a test of hypothesis using a significance level of 1%) b) Compute the power of the previous test if the true proportion of adults having access to the internet in the population is 41%. What is the power if the true proportion is 42%? 43%? 44%? 45%? Redo the computations for α = 10%. What do we notice?

A population consists of 8 items. The number of different simple random samples of size three that can be selected from the population is?

The undergraduate GPA for students admitted to the top graduate business schools was 3.37 Assume this estimate was based on a sample of 120 students admitted to the top schools. Using past years’ data, the population standard deviation can be assumed known with Q=.28 What is the 95% confidence interval estimate of the mean undergraduate GPA for students admitted to the top graduate schools.

How do you do this question.

The level of nitrogen oxides (NOX) in the exhaust of cars of a particular model varies Normally with mean 0.22 g/mi and standard deviation 0.057 g/mi. A company has 25 cars of this model in its fleet. What is the level L (±0.0001) such that the probability that the average NOX level for the fleet is greater than L is only 0.03?

answer to the expected value of the perfect information lake place problem

The Lake Placid Town Council has decided to build a new community center to be used for conventions, concerts, and other public events, but considerable controversy surrounds the appropriate size. Many influential citizens want a large center that would be a showcase for the area, but the mayor feels that if demand does not support such a center, the community will lose a large amount of money. To provide structure for the decision process, the council narrowed the building alternatives to three sizes: small, medium, and large. Everybody agreed that the critical factor in choosing the best size is the number of people who will want to use the new facility. A Regional planning consultant provided demand estimate under three scenarios: worst case, base case, and best case. The worst-case scenario corresponds to a situation in which tourism drops significantly; the base-case scenario corresponds to a situation in which Lake Placid continues to attract visitors a current levels; and the best-case scenario corresponds to a significant increase in tourism.The consultant has provided probability assessments of .10, 60, and .30 for the worst-case, base-case, and best-case scenarios, respectively. The town council suggested using net cash flow over a five-year planning horizon as the criterion for deciding on the best size. A Consultant developed the following projections of net cash flow (in thousands of dollars) for a five-year planning horizon. All costs, including the consultant’s fee, are included. a. What decision should Lake Placid make using the expected value approach? b. Compute the expected value of perfect information. Do you think it would be worth trying to obtain additional information concerning which scenario is likely to occur? c. Suppose the probability of the worst-case scenario increases to.2, the probability of the base case scenario decreases to.5, and the probability of the best-case scenario remains at.3. What effect, if any, would these changes have on the decision recommendation? d. The consultant suggested that an expenditure of $150,000 on a promotional campaign over the planning horizon would effectively reduce the probability of the worst-case scenario to zero. If the campaign can be expected to also increase the probability of the best-case scenario to .4, is it a good investment?

Get college assignment help at uniessay writers calculate the correlation coefficient using the following values: Question: Is there a correlation between student anxiety scores and number of study hours? Interpret your findings. Caution: The question is missing something? What? Student Anxiety Scores Study Hours 5 1 10 6 5 2 11 8 12 5 4 1 3 4 2 6 6 5 1 2

A study conducted under the auspices of the National Highway Traffic Safety Administration found that the average number of fatal crashes caused by drowsy drivers each year was 1,550 (Business Week, January 26, 2004). Assume the annual number of fatal crashes per year is normally distributed with a standard deviation of 310. a.What is the probability of fewer than 1,000 fatal crashes in a year (to 4 decimals)?

A survey of 282 college students are randomly selected; 112 own a car. find a 99% confidence interval for the true proportion of all college students who own a car.

A company has 25 cars of this model in its fleet. What is the probability that the average NOX level x of these cars is above the 0.3 g/mi limit?

my home work is due at noon est. I do not have more time . please ansuwer ASAP Thanks

what is the probability that exactly 9 out of 12 of these plants have red blossoms?

The Lake Placid Town Council has decided to build a new community center to be used for conventions, concerts, and other public events, but considerable controversy surrounds the appropriate size. Many influential citizens want a large center that would be a showcase for the area, but the mayor feels that if demand does not support such a center, the community will lose a large amount of money. To provide structure for the decision process, the council narrowed the building alternatives to three sizes: small, medium, and large. Everybody agreed that the critical factor in choosing the best size is the number of people who will want to use the new facility. A Regional planning consultant provided demand estimate under three scenarios: worst case, base case, and best case. The worst-case scenario corresponds to a situation in which tourism drops significantly; the base-case scenario corresponds to a situation in which Lake Placid continues to attract visitors a current levels; and the best-case scenario corresponds to a significant increase in tourism.The consultant has provided probability assessments of .10, 60, and .30 for the worst-case, base-case, and best-case scenarios, respectively. The town council suggested using net cash flow over a five-year planning horizon as the criterion for deciding on the best size. A Consultant developed the following projections of net cash flow (in thousands of dollars) for a five-year planning horizon. All costs, including the consultant’s fee, are included. a. What decision should Lake Placid make using the expected value approach? b. Compute the expected value of perfect information. Do you think it would be worth trying to obtain additional information concerning which scenario is likely to occur? c. Suppose the probability of the worst-case scenario increases to.2, the probability of the base case scenario decreases to.5, and the probability of the best-case scenario remains at.3. What effect, if any, would these changes have on the decision recommendation? d. The consultant suggested that an expenditure of $150,000 on a promotional campaign over the planning horizon would effectively reduce the probability of the worst-case scenario to zero. If the campaign can be expected to also increase the probability of the best-case scenario to .4, is it a good investment?

Many vehicles used in space travel are constructed with redundant systems to protect flight crews and their valuable equipment. In other words, backup systems are included within many vehicle components so that if one or more systems fail, backup systems will assure the safe operation of the given Component, and thus the entire vehicle. Consider one particular component of the US space shuttle that has n duplicates (that is, one primary component and n-1 backups). Each of these systems functions, independently of the others, with probability 0.98. As long as at least one of these systems is functioning, this shuttle Component functions successfully.

please thoroughly answer each of the questions below. ( the length of each answer is depended on you. 1. Discuss are the four levels of measurement scales? Give examples of each and explain in detail. 2. Compare and Contrast the advantages and/or disadvantages of using a bar chart, a pie chart, or a Pareto diagram? Explain in detail. 3. Discuss the differences among the mean, median, and mode? What are the advantages and disadvantages of each?

I only have till 3 pm est. otherwise will ask for my refund . thanks

help solve: 33 percent of the physics majors belong to ethnic minorities. If 10 students are selected at random from the physics majors, that is the probability that no more than 6 belong to an ethnic minority

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November 3, 2019