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In a representative sample of 100 adult Americans, only 48 could name at least one justice who is currently serving on the U.S. Supreme Court. Using a significance level of 0.03, carry out a hypothesis test to determine if there is convincing evidence to support the claim that fewer than half of adult Americans can name at least one justice currently serving on the Supreme Court.
Given the following data, calculate the EMV for each investment alternative. Which is best based on the EMVs you calculated?
Choose a business problem that is based upon an experience from your place of work or home environment. Briefly describe the business problem and the research methodology that you would employ to gather data and test your hypothesis
I performed a linear regression for the Population to the monthly profit, but do not understand how to use the information. And I do not understand the confidence interval estimate; how do I use and decipher the info.
First National Bank and City National Bank are competing for customers who would like to open IRAs. 32 weeks are randomly selected for First National Bank and another 32 weeks are randomly selected for City National.
Tim has two more problems to solve on his test, but he doesn't know how long it will take to finish them. He assigns mutually irrelevant normal distributions to the times
The economists in the Obama administration suggested that the stimulus package that they recommended in early 2008 would keep unemployment under eight percent.
On randomly selected day, let X and Y, respectively, be proportions of time that the drive-in and walk-in facilities are in use. Determine the marginal density of X.
She wants to be 90% confident and be accurate within 5% of the true proportion. Find out the minimum sample size necessary.
Determine SSE, SS (Total) and the explained sum of squared variation SSR and find the estimated y intercept slope and write the regression equation.
Using the p- value approach, test the hypotheses at the 5% level of significance.
When is regression used? What are the assumptions of Linear Regression? What is correlation? How does it differ from regression? What is the interpretation of the correlation coefficient?
Compute the value of the test statistic (to 2 decimals).
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