Probability
Resulting combination of outcomes
What is an event?
How you know to reject the null hypothesis
What is a p-value below the alpha
sqrt. of (pq/n)
What is the standard deviation of the sample proportion?
retrospective and prospective studies
What are the two types of observational studies?
invnorm(1+c/2)
What is the z*?
# of outcomes in A/ # of possible outcomes
What is the probability of A?
mistakenly rejecting the null hypothesis, when the null is true
What is a type I error?
subtract the end points of the confidence interval and divide by 2
What is the margin of error?
What is blinding?
bionomcdf/pdf(number of trials, probability of success, number of successes)
What is the formula for the binomial model?
Events that have no outcomes in common, cannot occur together
What is the mutually exclusive?
increase the power of the test
What is increasing alpha and/or the sample size?
statistic ± (critical value x standard deviation of test statistic)
What is a confidence interval?
Proves a cause and effect relationship
What is an experiment?
geometpdf/cdf(probability, number of successes)
What is the geometric probability model?
You roll a fair die three times. What is the probability that you Roll all 6's?
What is 0.0046?
straight enough, randomization condition, equal variance, nearly normal
what is conditions for a test of linearity?
(z*s/E)2
What is the formula for n?
Cannot separate out the effects of one factor from the effects of the other factor
What are confounded variables?
invT(1+C/2, df)
What is the critical value of t?
You roll a fair die three times. What is the probability that the numbers you roll are not all 5's?
What is 0.995?
categorical data, independence and randomization conditions, sample size assumption, expected cell frequency condition: all cells must be greater than 5
What is a conditions for a chi squared goodness of fit test
(statistic-parameter)/standard deviation of statistic
What is the standardized test statistic?
group1-------control------treatment
random compare
allocation
group 2-------treatment-----control
What is a matched pairs experiment?
tcdf(lower, upper, df)
What is the p-value for t?