Either the text is mistaken or there has been a miscommunication.
First of all, remember that if , then . For , your logic is essentially correct, and . And then for we have , and so .
Let the distribution function for X be:
Assume that , find
My solution:
For , we have
But the answer in the back for this portion is 1, so what am I doing wrong?
I'm basically reading and learning from the Statistic text I found in my office to prepare for a grad course in the Fall. I thought it would have been a walk in the park, but it turns it can get hairy here. Thank you!