Probability
If a marble is randomly chosen from a bag that contains exactly 8 red marbles, 6 blue marbles, and 6 white marbles, what is the probability that the marble will NOT be white?
What is 14/20?
A local club plans to invest $10000 to host a baseball game. They expect to sell tickets worth $15000. But if it rains on the day of game, they won't sell any tickets and the club will lose all the money invested. If the weather forecast for the day of game is 20% possibility of rain, is this a good investment?
$2000
What is the definition of expected value?
the long-run average value of that variable, calculated by weighting each possible outcome by its probability
OR how much you can expect to win at the end of the game
Rosa can wash 15 cars in 6 hours. If Joel and Tony help Rosa and work at the same
rate as she does, how many hours will it take them to wash 15 cars?
What is 2 hours?
At a school picnic, 1 junior and 1 senior will be selected to lead the activities. If there are 125 juniors and 100 seniors at the picnic, how many different 2-person combinations of 1 junior and 1 senior are possible?
What is 12,500 combinations?
A company makes electronic gadgets. One out of every 50 gadgets is faulty, but the company doesn't know which ones are faulty until a buyer complains. Suppose the company makes a $3 profit on the sale of any working gadget, but suffers a loss of $80 for every faulty gadget because they have to repair the unit. What is the profit for 50 gadgets?
What is $1.34?
What is probability?
The chance of something happening
When a student subtracts 18 from a number, the result is 1/4 of the number. What is
the number?
What is 24?
a slang term describing a perceived decline in mental sharpness, often attributed to excessive consumption of low-quality, intellectually unstimulating online content
What is brain rot?
Kareem has 4 sweaters, 6 shirts, and 3 pairs of slacks. How many distinct outfits, each consisting of a sweater, a shirt, and a pair of slacks, can Kareem select?
What is 72 distinct outfits?
You draw one card from a standard deck of playing cards. If you pick a heart, you will win
$10. If you pick a face card, which is not a heart, you win $8. If you pick any other card,
you lose $6. Do you want to play? Explain
What is "yes" because...?
How would you write probability as a fraction?
Desired outcomes/possible outcomes
A juicer can extract an amount of apple juice equal to 85% of the weight of the
apples. Write an equation that models the amount of juice, a , that the juicer can extract from
x pounds of apples.
a = 0.85x
(Variables may change)
Ms. Eland's favorite type of brain rot
What is Love Island?
There are 6 people, out of which you have to choose 3 to be part of a committee, first a chairman, then a secretary, then a treasurer (so order matters). How many different committees can there be?
What is 120?
A detective figures that he has a one in nine chance of recovering stolen property. His out-
of-pockets expenses for the investigation are $9,000. If he is paid his fee only if he
recovers the stolen property, what should he charge clients in order to breakeven?
What is "$81,000"?
What is the difference between theoretical probability and experimental probability?
Theoretical probability is what could happen in a perfect world while is experimental is what would actually happen
Alphonso bends a wire that is 36 cm long to form a rectangle. The length of the
rectangle is 2 times its width. What is the width, in centimeters, of the rectangle?
This thing has an eye, but cannot see.
What is a needle?
In a game, 100 marbles number 00 through 99 are placed in a box. A player draws 1 marble at random from the box. Without replacing the first marble, the player draws a second marble at random. If both marbles drawn have the same tens digit (that is, both are numbered 00 and 09 or 10 and 19, or 20 and 29, etc.), the player is a winner. If the first marble Terry draws is numbered 87, what is the probability that Terry will be a winner on the next draw?
What is 1/11?
At Tucson Raceway Park, your horse, Soon-to-be-Glue, has a probability of 1/20 of
coming in first place, a probability of 1/10 of coming in second place, and a probability of
¼ of coming in third place. First place pays $4,500 to the winner, second place $3,500 and
third place $1,500. Is it worthwhile to enter the race if it costs $1,000?
What is no?
What is the highest probability something can be?
100%
The height of a triangle is 16 inches greater than 8 times the length of its base. If the
area of the triangle is 60 insquared, what is the length of the base in inches?
What is 3?
This thing has a neck, but no head.
What is a bottle?