Answer:
It will be 2. (B) and 4. (D)
Step-by-step explanation:
I took the assignment and got it right :D
Since we are given that the student has a brand Y phone, they are one of a sample of only 580 students. Since 80 of those students also own a brand X (they own both) the probability that the random student is one of those is 50/580 = 5/58 = 8.62%
X - 5
Y - 7
That is the answer hope this helps !