Suppose a company rates it employees on a 1-4 scale (with 4 being the highest rating)...

  

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Suppose a company rates it employees on a 1-4 scale (with 4 being the highest rating) and the following probability distribution describes the distribution of the ratings: 26% of the employees had a "4"; 21% of the employees had a "3" rating; 22% of the employees had a "2" rating; and the remaining employees recieved a "1" rating. What is the expected value of the rating of a randomly chosen employee? (please express your answer using 2 decimal places) To determine whether high blood pressure affected whether a person had a stroke, a sample of 147 people who had had strokes are examined. In the sample, 35% had high blood pressure. If we were to test the hypothesis at the 10% level of significance that at least 31% of the people who have had strokes have had high blood pressure, what is the test statistic? (please round your answer to 2 decimal places) Suppose a company rates it employees on a 1-4 scale (with 4 being the highest rating) and the following probability distribution describes the distribution of the ratings: 26% of the employees had a "4"; 21% of the employees had a "3" rating; 22% of the employees had a "2" rating; and the remaining employees recieved a "1" rating. What is the expected value of the rating of a randomly chosen employee? (please express your answer using 2 decimal places) To determine whether high blood pressure affected whether a person had a stroke, a sample of 147 people who had had strokes are examined. In the sample, 35% had high blood pressure. If we were to test the hypothesis at the 10% level of significance that at least 31% of the people who have had strokes have had high blood pressure, what is the test statistic? (please round your answer to 2 decimal places)

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The expected value of the rating of a randomly chosen employee is 271 The ... View the full answer