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Question: Repeat Problem, but now make the second input variable triangularly distributed with parameters 50, 100, and 500. This time, verify not only that the correlation between the two inputs is approximately 0.7, but also that the shapes of the two input distributions are approximately what they should be: normal for the first and triangular for the second. Do this by creating histograms in Excel. The point is that you can use @RISK's RISKCORRMAT function to correlate random numbers from different distributions.
Problem: When you use @RISK's correlation feature to generate correlated random numbers, how can you verify that they are correlated? Try the following. Use the RISKCORRMAT function to generate two normally distributed random numbers, each with mean 100 and standard deviation 10, and with correlation 0.7. To run a simulation, you need an output variable, so sum these two numbers and designate the sum as an output variable. Now run @RISK with 500 iterations. Click on @RISK's Excel Reports button and check the Simulation Data option to see the actual simulated data.
a. Use Excel's CORREL function to calculate the correlation between the two input variables. It should be close to 0.7. Then create a scatterplot of these two input variables. The plot should indicate a definite positive relationship.
b. Are the two input variables correlated with the output? Use Excel's CORREL function to find out. Interpret your results intuitively.
What type of statistical test best assesses the relationship between job satisfaction and level of stress and what test would be appropriate to determine whether the difference between men and women is real or due to chance variation?
TELEVISION PILOTS After the private screening of a new television pilot, audience members were asked to rate the new show on a scale of 1 to 10.
a. If the campaign manager's claim is correct, what is the probability that the sample proportion would be no more than 0.49 for a sample of this size? b. Based on your answer to part (a), speculate on whether the campaign manager's claim might be ..
The positive correlation between health and income per capita is one of the best-known relations in international development.
approximately 23 of the calls to an airline reservation phone line result in a reservation being made.a suppose that an
determine the value of c so that the following functions represent joint probability distributions of the random
(a) Construct a histogram for the data and describe its properties. (b) Construct a runs chart for the data. (c) Write a brief summary of the two data displays contrasting the infor mation gained by each plot.
a backpack manufacturer produces an internal frame pack and an external frame pack. let x represent the number of
Assuming a linear cost relationship, what are the regression coefficients, b0 and b1?
Identify the characteristics of the comparison (HO) distribution; specifically, its standard deviation and the quantities used to derive these characteristics.
Draw a picture of the possible sample proportions that would result from samples of 800 people from a population with a true proportion of .50.
The lowess fitted value is 0.883. Thus the value of adj discussed on the previous slide is 0.883 for spots with A=7. How is the lowess curve determined?
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