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Give an example of how Regression Analysis can be used in your work to make a business decision. Give the dependent and independent variables. Make up data and compute the regression equation. Is it significant at the .05 level?
You manufacture and sell an iron rod whose electrical conductivity is supposed to be 10.1. You plan to make 6 measurements of the conductivity of a rod you plan to sell.
The random variable x is known to be uniformly distributed between 1.0 and 1.5.
You took the standard deviation of 4.5 minutes from a commuting friend and believe that that is the standard deviation for the area. Prepare a 95% confidence interval for the true average commuting time.
Test whether there is significant difference in the test anxiety level of the three groups using nonparametric test.
Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.
Students in a statistics class at a large state university were given the survey in which one question asked was age (in years); one student was a retired person, and her age was an "outlier".
Write a paragraph summarizing the results of the analysis and determine whether the calculated values of chi-square are statistically significant
The standard deviation of the differences d for the paired sample data s d = ____________
What is the probability that the mean annual precipitation during 49 randomly picked years will be less than 101.8 inches?
Determine equation in point-intercept form for line that goes through points (8,-1) and (4,3).
Construct a probability for the number of students in the sample who watch soap operas.
A machine fills containers with a mean weight per container of 16oz. If no more than 5% of the containers are to weigh less than 15.8oz, what must the standard deviation of weights equal?
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