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The coefficient of linear correlation, r, for this analysis is:

Predict the sales based on this model, when the price is 1.2 dollars and we only applied Promotion1.

When finding the p-value for the ANOVA F test, what degrees of freedom should be used?

In a simple linear regression model with 15 observations, we obtain a test statistic of -2.17 t-test for the slope, β. What should be the conclusion when assessing the relationship between predictor x and response y?

Should anything be done to improve this model?

Which of the following predictors should probably be removed from the model to improve it?

  The charge nurse on the 3-11 shift is planning nursing care for a group of patients and is uncertain about      which tasks to assign to the UAP.  Which of the following information is essential for the nurse to have/know      in order to make the assignments correctly? (choose all that apply)

A manufacturer ships toasters in cartons of 10. In each carton, they estimate a 10% chance that one of the toasters will need to be sent back for minor repairs. In a batch of 5,000 toasters, what are the chances that fewer than 450 toasters need to be returned? (round to three decimal places)

A pizza delivery driver, always trying to increase tips, runs an experiment on his next 40 deliveries, all of which will be made on the same warm, sunny day. He flips a coin to decide whether or not to call a customer from his mobile phone when he is five minutes away, hoping this slight bump in customer service will lead to a slight bump in tips. After 40 deliveries, he will compare the average tip percentage between the customers he called and those he did not. Was the experiment replicated?

Administrators at a university were interested in estimating the percentage of students who are the first in their family to go to college. The university student body has about 47,000 members. The university administration is considering a variety of ways to sample students for a survey. Identify the problem of: setting up a table in the student union and ask students to stop and answer a survey