Is the solution of the question is wrong? If yes then please provide me a correct solution of the same
Share
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Yes solution to this question is wrong, you can easily calculate ER and SD by using probability of both the scenarios. This question has been asked too many time on qforum, you will find the solution on qforum when you will search with relevant keyword.