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Question: Victor Anderson, the owner of Anderson Belts, Inc., is studying absenteeism among his employees. His workforce is small, consisting of only five employees. For the last three years he recorded the following number of employee absences, in days, for each quarter.
Quarter
Year I II III IV
2001 4 10 7 3
2002 5 12 9 4
2003 6 16 12 4
Determine a typical seasonal index for each of the four quarters.
Do these data suggest a statistically significance difference between the proportions of drug-resistant cases in the two states? Use a 0.02 level of significance and computed value of 2.37.
Raccoons are identified by gender and then weighed from three different neighborhoods. Using a 0.05 significance level what can you conclude from the following Two-Way ANOVA results?
For all questions, clearly explain/show your answers. For the Analysis section, justify your answers with the appropriate graphs, statistics, equations, etc.
Concept of statistical signi cance
A loan application is received this morning. What is the probability that:
Test hypothesis that both propellants have same mean burning rate. Utilize α=0.05. Compute the P value.
Find the expected value of the number of tests taken.
If a proposal evaluator randomly selected two proposals, what is the probability that both of them met the specified?
How large a sample is needed to find the population mean within $250 at 99 percent confidence?
State the quick rule for a significant correlation and explain its limitations. What sums are needed to calculate a correlation coefficient? What are the two ways of testing a correlation coefficient for significance?
What is the probability there will be between 10 and 14 calls inclusive arriving at the company in the next 15 minutes?
Perform a hypothesis test by using.04 level of significance to find out if there is a difference between the population means.
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