Quiz 1

The letters that form the word ALGEBRA are placed in a bowl. Craig says the probability of choosing an 'a' is 2/7, is this experimental or theoretical probability?

• Theoretical

• Experimental 

Answer explanation

Craig's probability of choosing an 'a' is based on the total number of letters in the word ALGEBRA. Since it is calculated using the known total and favorable outcomes, it is a theoretical probability, not experimental.

Find the probability of rolling greater than a 1 on a single dice.

• 6/6

• 5/6

• 4/6

• 1/6

Answer explanation

When rolling a single die, the outcomes are 1, 2, 3, 4, 5, and 6. Rolling greater than 1 includes 2, 3, 4, 5, and 6, which are 5 outcomes. Thus, the probability is 5 out of 6, or 5/6.

Probability can be between what two numbers?

• 10 and 20

• 0 and 100

• 0 and 1

• All Numbers are possible

Answer explanation

Probability ranges from 0 to 1, where 0 indicates impossibility and 1 indicates certainty. Therefore, the correct answer is 0 and 1.

What is the probability of spinning green?

• 0

• 1/4

• 1/2

• 3/4

Answer explanation

The probability of spinning green is determined by the ratio of green sections to the total sections. If there are 1 green section out of 4 total sections, the probability is 1/4, making this the correct answer.

How do you write 0.02 as a percent?

• 20%

• 200%

• 2%

• .02%

Answer explanation

To convert 0.02 to a percent, multiply by 100. Thus, 0.02 x 100 = 2%. Therefore, the correct answer is 2%.

The letters that form the word MATHEMATICS are placed in a bowl. What is the probability of choosing a "M"?

• 8/121

• 4/11

• 2/11

• 4/121

Answer explanation

The word MATHEMATICS has 11 letters, with 'M' appearing 2 times. The probability of choosing 'M' is the number of 'M's divided by the total letters: 2/11. Thus, the correct answer is 2/11.

The letters that form the word ALGEBRA are placed in a bowl. Craig says the probability of choosing an 'a' is 2/7, is this experimental or theoretical probability?

• Theoretical

• Experimental 

Answer explanation

Craig's probability of choosing an 'a' is based on the total number of letters in the word ALGEBRA. Since it is calculated using the known total and favorable outcomes, it is a theoretical probability, not experimental.

You flip a coin 20 times and record the results. Is this experimental or theoretical probability?

• Experimental

• Theoretical

Answer explanation

The probability calculated from actual coin flips is called experimental probability, as it is based on observed outcomes. In this case, since you flipped a coin 20 times and recorded the results, the correct choice is Experimental.

Jackson flipped a coin 18 times and got heads 6 of those times. What is the experimental probability of flipping heads? 

• 1/3

• 1/2

• 2/3

• I'm not sure how to do this problem. 

Answer explanation

The experimental probability of flipping heads is calculated by dividing the number of heads (6) by the total flips (18). So, 6/18 simplifies to 1/3. Therefore, the correct answer is 1/3.

Write 11/25 as a percent

• 11%

• 44%

• 22%

• 55%

Answer explanation

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100. Here, 11 ÷ 25 = 0.44. Then, 0.44 × 100 = 44%. Thus, 11/25 as a percent is 44%.