Unit 2

The probability that an investigator will correctly reject the null hypothesis when it is false is called the __ if the statistical test.

A Z-score of 0 is equal to _________

Traditionally, ______ is the probability associated with alpha.

An implication of the central limit theorem is that the sampling distribution of the mean can be approximated by a ____ distribution when the sample size is sufficiently _____.

Rejecting the null hypothesis when you actually should have a significant result is _______.

As the sample size increases, the standard error of the mean ______, other things being equal.

Which of the following statements is an example of a two-tailed alternative hypothesis?

The___ the sample size, the ____ the statistical test will be, everything else being equal.

Rather than attempt to select all possible random samples from a population, researchers select one sample, and use the sample data to ______ the population values.

Two-tailed alternative hypotheses do not indicate ________ in the prediction.

In hypothesis testing, if observations are unlikely to be due to chance, we ______ the null hypothesis.

An unbiased estimator is a statistic whose mean across all possible random samples of a given size equals the value of the _________ parameter

Even when the shape of the underlying population is skewed, the sampling distribution of the mean approximated a _________ ____________when sample sizes are large enough.

The standard deviation of a sampling distribution of the mean is called the _________ ____________ of the mean.

When a researcher states that an observed value will be higher than a comparison value, she must provide a _____ _____ alternative hypothesis.

The hypothesis of “no difference” that is assumed to be truck is called the ________

If a result is due to “non chance”, it means that the effect of your independent variable on dependent variable is statistically ______