Challenge: Second T-test | T-Test
The Art of A/B Testing

## Challenge: Second T-test

Your task is to do a t-test. Recall that the distribution in the `'Click'` column has a normal distribution in both datasets. Also, there is a statistically significant difference between the variances. Now it is time to find out whether there is statistical evidence that the means of the two samples are equal.

Remember this: We are not doing the usual T-test here, but a modification of the Welch T-test. For samples with different variances, you need to specify an additional parameter `equal_var=False` in the `ttest_ind()` function. This will lead to the use of a modification of the Welch T-test, which is designed to work with samples with different variances.

1. Calculate the mean values.
2. Do a T-Test.

Everything was clear?

Section 4. Chapter 3

Course Content

The Art of A/B Testing

## Challenge: Second T-test

Your task is to do a t-test. Recall that the distribution in the `'Click'` column has a normal distribution in both datasets. Also, there is a statistically significant difference between the variances. Now it is time to find out whether there is statistical evidence that the means of the two samples are equal.
Remember this: We are not doing the usual T-test here, but a modification of the Welch T-test. For samples with different variances, you need to specify an additional parameter `equal_var=False` in the `ttest_ind()` function. This will lead to the use of a modification of the Welch T-test, which is designed to work with samples with different variances.