The answer is below.
Work Step by Step
My brother is incorrect because these events are not independent events. If it is cloudy tomorrow, then it is more likely that it will rain. Thus, the events are not independent as he claims.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.