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Stats Proportion
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Terms in this set (11)
confidence interval
the range of values within which a population parameter is estimated to lie
standard error of p hat
confidence
level of certainty in the interval estimate, so your conclusion is that you are 95% confident that the interval you calculated contains π.
confidence interval for population proportion π:
where p hat denotes the sample proportion, n is the same size, z * represents the critical value from the standard normal distribution for the confidence level desires.
confidence level
The measure of how confident you are that the interval does in-fact contain the true parameter value
critical value
z* (multiplier used with SE)
Margin of Error
2 * square root of p hat (1 - p hat)/n (half of confidence interval)
technical conditions
the sample is a simple random sample from the population of interest. Check the data collection.
Upper .010 critical value
Z star, normal distribution, area to the right under the standard normal curve .010
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