. Geno and Smith collaborated in a Math256 Midterm recently and both received 90 out of a possible 100 points. The events, Geno receiving 90 points and Jason receiving 90 points are : d. All of the answer options are correct. b. disjoint events a. independent events c. dependent events
1. Geno and Smith collaborated in a Math256 Midterm recently and both received 90 out of a possible 100 points. The
d. All of the answer options are correct.
b. disjoint events
a. independent events
c. dependent events
2. In his Fall Math256 class, 40% of the students studied at least 15 hours per week, 30% of the students received a 4.0, and 10% studied at least 15 hours per week and received a 4.0. Find the probability of students who either studied 15 hours per week or received a 4.0?
- a. 0.4
- d0.7
- c. 0.1
- b. 0.6
3. Two high school seniors find themselves with much time and nothing to do. They decide to devise a computer game in which a cursor moves randomly along the x axis between 0 and 4. The game they play is to stop the cursor at random points between O and 4 without looking at the screen. Such a game results in a uniform distribution over the interval between 0 and 4 and resembles a density curve. The area covered when x< 2 is :
e. None of the above
a. 0.125
c. 2
b 0.25
d. 0.5
4. About 10% of students in Math256 will receive a 4.0. If I choose 3 Math256 students at random, find the probability that at least 2 students will receive a 4.0?
d. 0.972
c. 0.081
e. 0.1
а. 0.028
b. 0.333
5. A student takes at most 3 courses every quarter at GRC. Describe a
Does the student take a course at GRC or not?
a. S=(Takes Math256, does not take Math256}
c. S={0,1,2}
b. S={takes a course at GRC, does not take a course at GRCI
d. S={takes 0 courses at GRC,takes 1 course at GRC, takes 2 courses at GRC,takes 3 or more course at GRC}
6. 30% of students take Physics 101 and 20% take Math256. Of the students who take Physics101, 25% also take Math256. If a student is chosen at random find
P( student takes Physics101 and Math256)
b. 0.2
c. 0.25
e 0.075
a. 0.3
d. 0.83
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