A spinner with 9 equal sections labeled with the letters A, A, B, B, B, C, C, C, and D is spun 198 times. Which of the following correctly predicts how many times the spinner will land on the letter B?(1 point)

Responses

66 times
66 times

198 times
198 times

44 times
44 times

22 times
22 times
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1 answer

To determine how many times the spinner will land on the letter B when spun 198 times, we first calculate the probability of landing on B in a single spin.

The spinner has 9 sections:

  • A: 2 sections
  • B: 3 sections
  • C: 3 sections
  • D: 1 section

The total number of sections is 9. The probability of landing on B is the number of B sections divided by the total number of sections.

\[ \text{Probability of B} = \frac{\text{Number of B sections}}{\text{Total sections}} = \frac{3}{9} = \frac{1}{3} \]

Next, to find the expected number of times the spinner lands on B when spun 198 times, we multiply the total spins by the probability of landing on B:

\[ \text{Expected number of B} = 198 \times \frac{1}{3} = 66 \]

So, the correct prediction is that the spinner will land on the letter B 66 times.