Probabillity

Which of the following DOES NOT belong to the group?

• Chance

• Interpretation

• Possibilities

• Uncertainty 

Which of the following is FALSE?

• Flipping a coin thrice has 3 possible outcomes.

• Answering a true/false type question has two possible outcomes.

• The probability of getting a head when a coin is tossed once can be expressed as 1/2 , 0.5 or 50%.

If you tossed a die, what is the probability that it will land on a number that is a multiple of 3?

A number cube is rolled. What is the probability of rolling a number that is not 3?

A card is drawn from a standard deck of 52 cards. The probability of getting a red card is:

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 2 or 3?

A glass jar contains 9 marbles with colors red, yellow, green, and blue. The probability of drawing a single red marble at random is 1/3. What does this mean?

• There are 7 red marbles in the glass jar.

• There are 5 red marbles in the glass jar. 

• There are 3 red marbles in the glass jar.

• There are more red marbles than the others.

After 500 spins of the spinner, the following information was recorded: Green = 225, Orange = 132; Violet = 143. What is the probability of the spinner landing on VIOLET?

• 27%

• 29%

• 45%

• 71%

What do you call the measure or estimation of how likely it is that an event can occur?

• Event

• Probability

• Outcome

• Sample space

What is the formula used in finding the probability of an event E?

• $P\left(E\right)\ =\ \frac{no.\ of\ outcomes\ favorble\ to\ E}{total\ no.\ of\ possible\ outcomes}$
  

• $P\left(E\right)\ =\ \frac{no.\ of\ outcomes\ favorable\ to\ E}{total\ numberof\ favorable\ outcomes}$

• $P\left(E\right)\ =\ \frac{no.\ of\ outcomes}{total\ no.\ of\ outcomes}$

• $P\left(E\right)\ =\ \frac{no.\ of\ outcomes\ favorable\ to\ E}{no.\ of\ events}$