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Complete the problems below and submit your work in an Excel document. Be sure to show all of your work and clearly label all calculations. All statistical calculations will use the Employee Salary Data Set.
1. Based on the sample data, can the average(mean) salary in the population be the same for each of the grade levels? (Assume equal variance, and use the Analysis Toolpak or the StatPlus:mac LE software function ANOVA.) Set up the input table/range to use as follows: Put all of the salary values for each grade under the appropriate grade label.Be sure to include the null and alternate hypothesis along with the statistical test and result.
2. The table and analysis below demonstrate a 2-way ANOVA with replication. Please interpret the results.
3. Using our sample results, can we say that the compa values in the population are equal by grade and/or gender, and are independent of each factor?
4. Pick any other variable you are interested in and do a simple 2-way ANOVA without replication. Why did you pick this variable and what do the results show?
5. Using the results for this week, What are your conclusions about gender equal pay for equal work at this point?
Find the equation of the regression line for the given data. What is the predicted value of Y when X = -2? What is the predicted value of Y and find the correlation coefficient between X and Y. Is there a weak or strong, positive or negative corr..
How many total people does the credit union employ? If you work for the credit union, and one employee is randomly selected to go to a convention, what is the probability that you will be chosen?
Define probability and explain its three perspectives. Provide an example of each. How is the standard normal distribution used to compute normal probabilities? Explain the importance of sampling from a managerial perspective. Explain the central lim..
The following data represent the monthly service fee in dollars if a customer's account falls below the minimum required $1,500 balance for a sample of 26 banks
Calculate the percentage of variance explained for r = 0.53. Is this correlation clinically important? Provide a rationale for your answer.
Generating the greatest good for the greatest number.
Find the probability that the sample proportion obtained from the sample of 350 Bank of America customers would be within three percentage points of the population proportion. That is, find P(.45 pˆ .51).
Estimate unemployment in the fourth quarter of 1975 using a single moving average with k = 3. Repeat using single exponential smoothing with α = 0.7. Compare your two estimates using the accuracy statistics.
1)Discuss the following concepts and give examples from everyday life in which you might encounter each concept. Hint: For instance, consider the ?experiment? of arriving for class. Some possible outcomes are not arriving (missing class), arriving on..
Kellogg's cereal company regularly tests its production line to ensure the accuracy of the loading mechanisms. From a population of cereal boxes marked "12 ounces," a random sample of [n=16 boxes] is selected and the contents of each box is weighed...
Pharmaceutical companies perform tests to make sure the products they produce are safe. One test is to make sure that the drugs has 100% potency, so the mean is 100%. Let's say for a particular tablet product that the production process has a populat..
Construct a 88% confidence interval for the mean femininity score of all male hotel managers and estimate the percent change amongst lactating mothers to within ± 0.5% with 99% confidence. How large a sample of nursing mothers do you need?
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