MtH 225 (Exam 2)
statistical test - correct answer used to determine whether results from a sample
are convincing enough to allow us to conclude something about the population
null hypothesis - correct answer claim that there is no effect or difference
alternative hypothesis - correct answer claim for which we seek evidence
The null hypothesis always contain an ... - correct answer equality
The alternative hypothesis always contains an ... - correct answer inequality (<, >,
=/=)
randomization distribution - correct answer a collection of statistics from
samples simulated assuming the null hypothesis is true
Where is randomization distribution centered? - correct answer the value of the
parameter given in the null hypothesis
p-value - correct answer the proportion of samples, when the null hypothesis is
true, that would give a statistic as extreme or more extreme than the observed sample
one-sided alternative - correct answer alternative hypothesis that varies from the
null in only one direction (contains < or >)
two-sided alternative - correct answer alternative hypothesis that can vary from
the null in either direction (contains =/=)
