How do I test a null hypothesis?

How do I test a null hypothesis?

To test a null hypothesis, you typically use statistical methods like t-tests or ANOVA. What specific test are you interested in?

I'm interested in using a t-test. Can you explain how that works?

Sure! A t-test compares the means of two groups to see if they are statistically different from each other. You'll need to calculate the t-statistic and compare it to a critical value from the t-distribution.

What data do I need to perform a t-test?

You'll need two sets of data: the sample means, the sample sizes, and the standard deviations of both groups. Do you have data ready?

Yes, I have the data. How do I calculate the t-statistic?

You can calculate the t-statistic using the formula: t = (mean1 - mean2) / sqrt((s1^2/n1) + (s2^2/n2)), where mean1 and mean2 are the sample means, s1 and s2 are the standard deviations, and n1 and n2 are the sample sizes.