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Quiz 1______Name
Quiz 1______Name

... This is a closed-book exam. You are allowed to use the statistical tables in your textbook, a calculator, and one two-sided sheet of notes. There are 24 problems, with point values as shown. Parts of problems do not necessarily receive equal weight. If you want to receive partial credit for incorrec ...
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ch - cnusd

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Through Confidence Limits

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Estimation - User Web Pages

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Student`s t test, Inference for variances

... Determination of Sample Size The sample size that will estimate p with an Error Bound B and level of confidence P = 1 –  is: ...
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... when compared with the standard normal distribution. This is because substituting the estimate s for the unknown value of σ introduces more uncertainty.  For sample sizes less than 30, s tends to underestimate σ. As the sample size increases, the t-density curve approaches the N(0,1) distribution. ...
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Exam III

... fill bottles. A bottle is to contain 400 milliliters of beverage. The actual amount is normally distributed with a standard deviation of 1.0 ml. The purchase of a new machine is contemplated. Based on a sample of 14 bottles filled by the new machine, the sample mean is 410 ml. and the standard devia ...
Student`s t test, Inference for variances
Student`s t test, Inference for variances

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Student`s t test, Inference for variances

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Inferences for Distributions

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Math 116 - Final Review

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...  Introduction – Any phenomena that can be counted can be summarized. If these summaries are used to describe a group of items, the figures presented are descriptive statistics. – When statistics are computed from a probability sample with the intention of generalizing from the sample to the populat ...
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... Given the same sample proportion of 0.45, which of the following would lead to the widest confidence interval for estimating the population proportion? A. B. C. D. E. ...
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