export_epi 202 midterm.csv - What is the general form of the test statistic What is the point estimate What does X approximate what is the numerator of

# export_epi 202 midterm.csv - What is the general form of...

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89238836a347e7e6e4bfddd6ab949c044ea64996Page 1What is the general form of the test statistic?What is the point estimateWhat does X approximate?what is the numerator of a test statistic?How many degrees of freedom do we see in a chi-squared test?What is the E(X|H0) for a CIR?What is the p-value?What is the alpha value?What does a small p-value mean?What are the ways that we can decrease variance?If we reject the null, what do we say?Limitations of Hypothesis testingWhat is the "power" of a test?T/F: the power of the study is equated with the power of the test.What is the general form of a confidence interval?What is a confidence interval?if the sample size were reduced to 1/10th of the current sample size, the expected width of the confidence interval aroundDefine the significance of of a confidence interval with respect to width and power.Define statistical precisionDefine statistical informationWhat if the CI does not include the null?Is there a difference between the Variance used in the CI v. the test stat?What distribution should prevalence take?if the sample size in the lunch cancer study were reduced to 1/10th of the current sample size, the expected value of the pevidence against the null hypothesis and in favor of the alternative increases as...The value of the numerator is determined by...Z-squared increases as the denominator...Is the sample size a significant scientific quandry?In an incidence rate difference, how does person-time affect the variance?When do we use the log in variances?When the sample sizes are the same, why might we have different variances?if the null is true, assuming no structural sources of bias, there will be more statistically significant findings at the alpha .05if the null is not true, assuming no structural sourceas of bias, there will be more statistically significant findings at the alphWhat are statistically significant findings?Define the P-value under the nullis there random variability in observational studies?Name the assumptions needed for observational studieswhat does the p-value mean for observational studies?conditional relation assumption for observational studiesinterpret the conditional relation assumption's p-value for observational studiesRandomization by nature assumption in observational studiesunder randomization by nature assumption, what type of study creates the basis for statistical inference?when can data be regarded as random in conditional relation justification and randomization by nature assumptions for obwhat is required to understand the role of chance?what is the relationship between validity and bias?in a Z2 test, the numerator is aÂ function of...
89238836a347e7e6e4bfddd6ab949c044ea64996Page 2Define Internal Validity ?define external validitywhat are the elements in a hypothesis test?

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