3. Three randomly chosen people decide to check the calendar froin the year they were born to see what day of the week they were born on (Monday, Tuesday, Wednesday, ....) What is the probability that at least two of them were born on the same day of the week? 4. Suppose you are trying to create a spam lter for your email inbox. You know the following facts: . 1 out of 800 spam emails contain the words \"get rich fast\" . 1 out of 2 emails are spam emails . 1 out of 1,200 emails contain the words \"get rich fast\" (a) What is the probability a random email both is a spam email and contains the words \"get rich fast\" ? (b) What is the probability a random email both is not a spam email and contains the words \"get rich fast\"? (c) If an email contains the words \"get rich fast\