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  3. Practicing Statistics Interview Questions in Python

Exercise

One tailed z-test

We know now that hypothesis tests can come in several forms. In this exercise, you'll implement a one tailed z-test on test data from tracking conversion on a mobile app. The data has been imported as results and numpy has already been imported for you along with pandas as well.

The treatment group represents some graphic alteration that we expect to improve the conversion rate of users. Run a test with alpha as .05 and find out if the change actually helped.

Instructions 1/4

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  • Assign and print the mean conversion rate for each group using the groupby() function on the Group column.