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Hypothesis Testing, Normal Disributions, and Z Scores

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Problem 1 - According to the Coffee Research Organization, the typical American coffee drinker consumes an average of 3.1 cups per day. A sample of 12 senior citizens ...
Problem 2 - An investigation of the effectiveness of an antibacterial soap in reducing operating room contamination resulted in the accompanying table. The new soap ...
Problem 3 - The city of Laguna Beach operates two public parking lots. The one on Ocean Drive can accommodate up to 125 cars and the one on Rio Rancho can ...
Problem 4 - The City of Maumee comprises four districts. Chief of police Andy North wants to determine whether there is a difference in the mean number of crimes ...
Problem 5 - A research firm wants to compare the miles per gallon of unleaded regular, mid-grade, and super premium gasoline. Because of differences in the performance ...
Problem 6 - One professor teaches a large section, section A, of a particular class, and on the first test of the term, the test scores in section A were approximately ...
Problem 7 - Colleges typically use grade point average cutoffs to decide who graduates with honors and who is accepted into certain programs ...
Problem 8 - The amount of cola in a 12-ounce can is uniformly distributed between ...
Problem 9 - The net sales and the number of employees for aluminum fabricators with similar characteristics are organized into frequency distributions. Both are normally ...
Problem 10 - Shaver Manufacturing, Inc. offers dental insurance to its employees. A recent study by the Human Resource Director shows the annual cost per employee ...
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