Now, that you’ve found the critical region, you need to check where your test-statistic lies and based on that make the decision. Let’s check that out in the next video.
So, since the given Z-statistic is -1.756 which is between -1.960 and +1.960 (critical region), we can’t reject the null hypothesis. Therefore, you can say that you didn’t find enough statistical evidence to disprove the product manager’s claim. Let’s go ahead and summarise all that you’ve learnt in this session so far.
Now, the above procedure follows the critical value method to do the hypothesis tests. As you know, you also have the p-value approach to do the same as well. Let’s go ahead to the next segment and check that out as well.