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1. The mean gas mileage for a mixture auto is 56 miles for every gallon. Assume that the fuel mileage is roughly regularly conveyed with a standard deviation of 3.2 miles for every gallon.

2. What conditions must n fulfill to make the x2 test legitimate?

3. To utilize the t-measurement to test for a contrast between the method for two populaces, what suspicions must be made about the two populaces? About the two examples?

4. Investigations of supervisors from two nations in the 1970s discovered sharp contrasts of sentiment toward quality administration. To see whether these distinction.

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