Answer:
The probability that a Randomly selected student from the incoming class will become a mathematics major is or 0.2829
The probability that she scored a 4 on the placement exam is
Step-by-step explanation:
Consider the provided information.
Then, the given student score is:
10% of the students scored a 1 = 10% = 10/100=1/10
20% of the students scored a 2 = 20% = 20/100=2/10
60% of the students scored a 3 = 60% = 60/100=6/10
10% of the students scored a 4 = 10% = 10/100=1/10
The student will become a mathematics major with probability x-1/x+3.
Calculate the probability for x=1,2,3 and 4
Let the event M denote that a randomly selected student will become a math major.
Part (A)
Now calculate the probability that a Randomly selected student from the incoming class will become a mathematics major.
Hence, the probability that a Randomly selected student from the incoming class will become a mathematics major is or 0.2829
Part (B)
What is the probability that she scored a 4 on the placement exam?
Hence, the probability that she scored a 4 on the placement exam is