The first thing any scientist does before performing an experiment is to form a hypothesis about the experiment's outcome. This often takes the form of a null hypothesis, which is a statistical ...

The critical value of t for your test is 1.990. If you get a t larger than 1.990, you can reject the null hypothesis. d. What are the chances of getting a correlation as large as 0.22 in a sample of ...

In Hypothesis Testing 1, you were introduced to the ideas of hypothesis testing in the context of deciding whether a coin was fair or biased in favor of heads. In this section hypothesis testing ...

When testing whether the means of more than 2 groups are statistically different, you could use a one-way ANOVA. But if you ...