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finalreview

# finalreview - Final Exam Review Lecture Population Sample...

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Final Exam Review Lecture Population: Sample: Parameter: Sample Statistic: Example: A manufacturing plant purifies its waste and discharges it into a local river. The EPA checks bacteria counts of water samples coming from the plant and from a point upstream from the plant. Does the data presented below indicate that the average bacteria count at the plant is higher than it is upstream from the plant? Use alpha=.05. At Plant Up Stream Difference 30.1 29.7 0.4 36.2 30.3 5.9 33.4 26.4 7.0 28.2 27.3 0.9 29.8 31.7 - 1.9 34.9 32.3 2.6 x- bars 32.1 29.62 2.48 s values 3.189 2.355 3.410

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Example: To test for ESP a person in one room concentrates on one of 5 symbols. A person in another room writes down the symbol which was perceived. If this was done 7 times, what is the probability that a person with no ESP gets exactly 3 correct out of the 7 attempts? Example: A company samples 400 bills ready for mailing. They find that 24 of them contain at least one error. Find a point estimate and a 90% confidence interval for the proportion of bills containing at least one error.
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finalreview - Final Exam Review Lecture Population Sample...

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