A major health study indicated that theres a birth month eff

A major health study indicated that there\'s a birth month effect for schizophrenia. If a child is born during a certain month, he or she has a significantly higher chance of developing schizophrenia later in life, however, the chance of developing schizophrenia only increases by 1 in 10 million.

Based on what you know about t-tests, how can there be a significant difference for that particular month when there\'s such a small increase in the chances of developing schizophrenia?

Solution

Here we can use the p-value for the t-test to check the significance.