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Chapter 10 6. Test H0: 8 versus HA: > 8, given = 0.01, n = 25,...

Chapter 10
6. Test H0: 8 versus HA: > 8, given = 0.01, n = 25, = 8.13 and s = 0.3. Assume the sample is selected from a normally distributed population.

7. Test H0: π = 0.25 versus HA: π 0.25 with p = 0.33 and n = 100 at alpha = 0.05 and 0.10.

8. Test at α = 0.01 the hypothesis that a majority (more than 50%) of students favor the plus/minus grading system at a university if in a random sample of 500 students, 285 favor the system?

9. Test whether the sample evidence indicates that the average time an employee stays with a company in their current positions is less than 3 years when a random sample of 64 employees yielded a mean of 2.76 years and s = 0.8. Use = 0.01. Assume normal distribution.

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orchestra answered 2 years ago
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