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Monthly prices for a commodity or shipping freight rate for a single shipping route over the past 20 years. Use the first 15 years of the time series and estimate at least 3 different models, perfor
Use the Metropolis – Hastings algorithm to sample θ from the posterior distribution.
Explain the difficulties faced by Boeing in developing the 787. What appears to be the cause of problem? What is Boeing doing to prevent similar problems in the production ramp-up?
Write an R function to generate a sequence of a given length from an m-state homogenous Markov chain with given transition matrix and initial state. As always, your code should contain plenty of com
Simulate this system for 20 customer arrivals and find out the average time a cash and credit card customer should wait in line before paying cashier.find out the customer inter-arrival time, whethe
We are interested in whether our friends and family have more facebook friends than does the general population of Americans, which is known to be 120.What is the null hypothesis (words and symbols)
An advertising project manager developed the network diagram shown below for a new advertising campaign. In addition, the manager gathered the time information for each activity, as shown in the bel
Find out the critical path and the expected completion time of the project.
Which fleet size will yield the lowest expected monthly costs for the Wingman?
A search engine site claims that, on average, one out of five visitors clicks on an ad. If 8 users visit the site, what is the probability that at least three click on an ad?I
The average time scheduled for a doctor’s visit is 22 minutes with a standard deviation of 15 minutes. A researcher uses a sampling distribution made up of samples of size 318. According to t
What is the industry average price-earnings ratio. What is price-earning ration for Reagan Inc. Is this the relationship you would expect between the two ratios.
If a regression analysis is performed using Variable A, Variable B and Variable C as independent variables to predict Dep. Variable, what is the lowest possible value of R2? What are the degrees of
If there are an odd number of data values in the set, the median would be the value which appears the greatest number of times, value which appears in the centre, average of the two end values, averag
Commissioner of the National Hockey League wants to describe maximum variability (Adjusted R squared) in winning then which one must he choose? Model1, Model2, Model 3.
What do you understand by the term cost of living index? Discuss the methods of construction of cost of living index with an example for each. Define the term trend. Enumerate the methods of determi
No. of infant death 423, No. of maternal death 89, No. of infant deaths in the first month 168, Calculate theinfant mortality ratematernal mortality rate.
EITHER find a newspaper, TV, radio or web article that reports some scientific study or statistical analysis of interest to you, and track down the primary source for the article. Write your own new
A researcher is interested in whether students who attend private high schools have higher average SAT Scores than students in the general population. Random sample of 90 students at a private high
There are two brands of cell phones that are almost identical except for some minor features: the A-Phone and the Pomegranate.
The objective is to find out the optimal placement of ads by PMA in the newspaper throughout August so as to maximize the cumulative total exposure (as measured by circulation) for the month of Augu
Use definitional formula given below to find out the derivative of the function. The revenue and cost functions for selling and producing quantity x for a certain production facility are given below.
You will recall the function pnorm() from lectures. Using this, or otherwise, calculated the probability of a standard Gaussian random variable exceeding 1.3.
What type of statistical procedure should the researcher use to answer her questions? Standard Deviation, Independent Sample t test, Correlation, Factorial Anova.
Consider a multiple regression model for a response y, with one quantitative independent variable x1, and one qualitative variable at three levels.