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Describe the meaning of statistics and describe its scope and use.
With the help of significant scatter diagrams describe negative correlation, positive correlation, and no correlation. What are the (ranges) numerical values which depict positive correlation, negativ
Find out the standard deviation and coefficient of skewness for the given distribution
Total scores X obtained by 50 students in Statistical Technique test of 100 marks are given below: 80 90 85 55 40 &nb
What do you mean by the term statistical survey? Describe different sampling methods.
Following data are given for marks in the subject A and B in the certain examination: MEAN MARKS 36, 85. Coefficient of correlation between A and B = ±0.66. Determine the two equations of regr
Describe Qualitative and Quantitative design, its role and purpose in research. Describe the different steps included in sampling.
The consultant has provided probability assessments of .10, .60, and .30 for the worst-case, base-case, and best-case scenarios, respectively. Calculate the expected value of perfect information. Do
A random sample of n = 50 males showed a mean average daily intake of dairy products equal to 756 grams with a standard deviation of 35 grams.
Set up this problem as an LP problem showing the data, the objective function and constraints.
CRA CDs Inc. wants mean lengths of the "cuts" on a CD to be 150 seconds (2 minutes and 30 seconds). This would allow the disk jockeys to have plenty of time for commercials within each 10-minute se
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