Download - 400 600 800 1000 200 400 600 800 1000 200 400 600 800 1000 200 Mystery 1Mystery 2Mystery 3
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Mystery 1 Mystery 2 Mystery 3
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The axiom that states “sampling distributions of means will tend
toward Normality when n is large.”
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What is the Central Limit Theorem?
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A single value that predicts the value of the parameter.
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What is a point estimate?
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A range of values that attempts to capture a parameter.
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What is a confidence interval?
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This is the lower end of the confidence interval?
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What is the lower confidence limit?
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Half of the confidence interval length (quantifies precision).
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What is the margin of error?
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This is a test for which the alternative hypothesis considers values on both sides of the null.
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What is the two-sided test?
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This is what a statistician says when the population standard
deviation for the variable comes from a source outside the data.
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What is “when σ is known”?
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The test statistic used to conduct a test of a mean when σ is
known.
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What is a z statistic?
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The probability distributions that resemble Normal distributions
but with broader tails.
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What are Student’s t distributions?
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Members of the t distribution family are defined by this
parameter.
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What are their degrees of freedom ?
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The test statistic used to test two means when the population
standard deviation is not known.
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What is a t statistic?
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This is the upper end of the confidence interval.
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What is the upper confidence limit?
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The upper confidence limit minus the lower confidence limit;
twice the margin of error.
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What is the “confidence interval length”?
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The term that mean “the probability of less or equal to a
given value.”
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What is the cumulative probability?
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A value for a t random variable that is greater than p × 100% of
the other t values.
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What is a t percentile?