Suppose that a student found an e-mail in the inbox folder. There is a 10% chance that it is a phishing e-mail (F) (i. e., P(F) = 0.1), and otherwise, it is a regular e-mail (F’). Based on the survey, it is known that the student will take one of the three options once he receives a phishing e-mail. The first is that there is a 60% chance that he will click "report phishing" (R) (i. e., P(R|F) = 0.6). The second is that there is a 30% chance that he will simply delete the email (D) without doing anything else (i. e., P(D|F) = 0.3), and the last is that he will read the e-mail and leave it in the inbox (L). On the other hand, if it is a regular e-mail, there is a 10% chance that he will click "report phishing" (R) (i. e., P(R|F’) = 0.1). There is another 10% chance that he will simply delete it (D), and otherwise, he will read it and leave it in the inbox (L). a) Draw a tree and find P(D), the probability that a randomly chosen e-mail is deleted. b) Suppose that an e-mail is reported as "phishing". Given that, what is the probability that it is actually a phishing e-mail?

do you have any choices

step-by-step explanation:

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.  

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.