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.

Solution

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