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The chi-square test. Think of a real-world situation that would best be analyzed using this technique. For this Discussion do the following:
1. Clearly describe the dependent and independent variables you would study;
2. State the research question and statistical null and alternative hypotheses; and
3. Explain why this test is appropriate and why the correlation, t-test, regression, or ANOVA is not appropriate.
Real world situation can be something simple.
The mean weight of loads of coal placed in train cars by a loading machine is 43.0 tons with a standard deviation of 8.0 tons. Assuming that the weight of loads placed in the train cars by this loader are normally distributed
Compute the 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.
What is the point estimate of the mean planned expenditure by all Americans taking long summer vacations in 2002?
For a given confidence interval, what is the interpretation of a 96% confidence level?
What sampling method did you use? Construct a 95% confidence interval for the true population proportion of the SUV's. What sample size would be needed to ensure an error of +/- 0.025 with 95% confidence?
Use the binomial distribution to determine the probability that a student will get at least 8 out of 10 questions on a ten question multiple choice test correct by just guessing if each question has four
Process data by Excel using its two-way ANOVA without replication program.
If X and Y are two independent Poisson random variables, then show that the conditional distribution of X given X+Y is binomial.
A clothing retailer wishes to investigate the relationship between order size (in dollars) and the level of satisfaction of the customer.
Joe is considering pursuing an MBA degree. He has applied to two different universities. The acceptance rate for applicants with similar qualifications is 25% for University A and 40% for University B.
Determine the probability of a positive economic trend given an increasing employment. Are employment and economic trend independent?
Set up the null and alternative hypotheses to test whether the proportion of MBA students who expect to stay at their first job five years or more is less than one-fourth of all U.S. MBA students.
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