Mathematics, 17.12.2020 17:20 lexybellx3

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

At the beginning of the semester, a professor tells students that if they study for the tests, then

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 17:20

If you are just building your payment history, how many points from a perfect score will you possibly miss?

Answers: 1

Answer

Mathematics, 21.06.2019 20:00

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?

Answers: 2

Answer

Mathematics, 21.06.2019 23:00

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

Answers: 2

Answer

Mathematics, 22.06.2019 03:00

Let us imagine that the number of automobile accidents in a certain region are related to the regional number of registered automobiles in tens of thousands (b1), alcoholic beverage sales in $10,000 (b2), and decrease in the price of gasoline in cents (b3). furthermore, imagine that the regression formula has been calculated as: y = a + b1x1 + b2x2 + b3x3 where y = the number of automobile accidents, a = 7.5, b1 = 3.5, b2 = 4.5, and b3 = 2.5 calculate the expected number of automobile accidents for a football weekend if the region has 25,000 registered vehicles, $75,000 worth of beer is sold, and a gas war causes a 10 cent drop in a gallon of gas.

Answers: 3

Answer

You know the right answer?

At the beginning of the semester, a professor tells students that if they study for the tests, then...

Questions