![subject](/tpl/images/cats/mat.png)
Mathematics, 01.08.2021 21:40 MallB7168
At the beginning of the semester, a professor tells students that if they study for the tests, then there is a 55% chance they will get a B or higher on the tests. If they do not study, there is a 20% chance that they will get a B or higher on the tests. The professor knows from prior surveys that 60% of students study for the tests. The probabilities are displayed in the tree diagram.
A tree diagram. Random student to studies for test is 0.6, and to does not study for test is 0.4. Studies for test to Gets B or higher is 0.55; does not get B or higher is 0.45. Does not study for test to Gets B or higher is 0.20; does not get B or higher is 0.80.
The professor informs the class that there will be a test next week. What is the probability that a randomly selected student studied for the test if they pass it with a B or higher?
0.20
0.55
0.60
0.80
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:00
Anature center offer 2 guided walks. the morning walk is 2/3 miles. the evening walk is 3/6 mile. which is shorter
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:00
1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:00
Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test
Answers: 1
You know the right answer?
At the beginning of the semester, a professor tells students that if they study for the tests, then...
Questions
![question](/tpl/images/cats/biologiya.png)
Biology, 01.10.2019 16:30
![question](/tpl/images/cats/mat.png)
Mathematics, 01.10.2019 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 01.10.2019 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 01.10.2019 16:30
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 01.10.2019 16:30
![question](/tpl/images/cats/geografiya.png)
Geography, 01.10.2019 16:30
![question](/tpl/images/cats/en.png)
English, 01.10.2019 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 01.10.2019 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 01.10.2019 16:30
![question](/tpl/images/cats/istoriya.png)
History, 01.10.2019 16:30