a math class has 50 students , of these 22 students are math majors and 18 students are male. Of the math majors 16 are female. Find the probability that a randomly selected student is male or a math major .
my answer
22/50 and 18/50 = 396/50= 7.29
Either or probabilities are found by adding the various probabilities.
Which events are not independent?
A. You draw two colored marbles without replacement and get one red and one blue.
B. You pull a green tile from a bag of tiles, return it, and then pull a yellow tile.
C. You toss two coins and get one head, one tail.
D. You choose two different ice cream flavors for a cone.
A and B are not independent events.
Ok so which one?
A and B.
Can you just give me one either A or B
Sure. A - drawing two colored marbles without replacement is not an independent event.
If two coins are tossed, what is the probability that the first coin will show heads and the second coin will show tails?
A. 1/2
B. 1/4
C. 1/8
D. 1/16
The probability of getting a head on the first coin is 1/2. The probability of getting a tails on the second coin is also 1/2, since the coin tosses are independent events. Therefore, the probability of getting a heads on the first coin and a tails on the second coin is:
1/2 × 1/2 = 1/4
So, the answer is B. 1/4.
On Friday nights the local diner serves three main entrées, each with a choice of vegetable.
The entrées are beef, chicken, and fish. The vegetables are spinach, broccoli, and carrots. How many possible dinners (entree and vegetable combinations) does the diner serve? List them.