110_lec16_Simulation_Expected_Values

110_lec16_Simulation_Expected_Values - A sampling...

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A sampling Distribution is a Probability Model Recall a sampling distribution describes the values assumed by a statistic upon repeated sampling. Think of a sampling distribution as assigning probabilities to the values the statistic can take. We can’t predict the outcome of one sample, but the outcomes of many samples have a regular pattern.
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Sampling Distribution A simple random sample of 1523 adults are asked whether they bought a lottery ticket in the last 12 months. What is the statistic? The sampling distribution for has a normal distribution. 1523 yes" " say number who ˆ = p p ˆ
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Sampling Distribution for p ˆ
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Sampling Distribution for Estimate the mean. Estimate the standard deviation. In the long run, 95% of the ‘s are between _________ and _________. 10% of the time, is below ________. p ˆ p ˆ p ˆ
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Where Probabilities Come From Probability : the proportion of times that an outcome would occur in a very long series of repetitions. Based on data from many repetitions (relative frequency) or Based theory (theoretical).
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