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Chapter 10: Comparing Two Populations or Groups

Across
an alternative hypothesis that seeks evidence of a difference requires the use of a ____-_____ test
To perform two-sample procedures, the random samples should be ___
procedures that yield accurate results, even when a condition is violated, are _____
if the number of successes and failures from both samples are greater than ten, the sampling distribution for the difference between the two proportions will be approximately ___
results that are too unlikely to be due to chance alone are considered statistically ___
in a two-proportion test, we calculate a ___ proportion
Down
particular t distributions are distinguished by _________ of freedom
the sampling distribution for the difference between means will be approximately normal if both sample sizes are greater than ________
hypotheses should always be written in terms of the ______
the hypothesis we are seeking evidence for ___
the margin of error in a confidence interval consists of a critical value of standard _______ of the statistic
the hypothesis we are seeking evidence against
to compare two proportions, we can construct a ____-___ z interval
if we want to compare two population proportions, we must have data from two ______ samples