Question

Use the table to answer the question.

Size
Color Large Medium Small TOTAL
Yellow 2 4 11 17
Blue 1 1 4 6
Red 1 2 4 7
TOTAL 4 7 19 30
What is P(blue or medium) ?

(1 point)
Responses

1030
Start Fraction 10 over 30 End Fraction

1230
Start Fraction 12 over 30 End Fraction

630
Start Fraction 6 over 30 End Fraction

1330

Answer 1

To find \( P(\text{blue or medium}) \), we can use the principle of inclusion-exclusion:

\[
P(\text{blue or medium}) = P(\text{blue}) + P(\text{medium}) - P(\text{blue and medium})
\]

Now, let's calculate each of these probabilities from the table:

1. **Calculate \( P(\text{blue}) \)**:
- Total number of blue items = 6 (from the TOTAL column for Blue)
- Total number of items = 30
- So, \( P(\text{blue}) = \frac{6}{30} \)

2. **Calculate \( P(\text{medium}) \)**:
- Total number of medium items = 7 (from the TOTAL column for Medium)
- So, \( P(\text{medium}) = \frac{7}{30} \)

3. **Calculate \( P(\text{blue and medium}) \)**:
- Blue and medium = 1 (from the cell in the table corresponding to Blue and Medium)
- So, \( P(\text{blue and medium}) = \frac{1}{30} \)

Now, we can combine these results:

\[
P(\text{blue or medium}) = \frac{6}{30} + \frac{7}{30} - \frac{1}{30} = \frac{6 + 7 - 1}{30} = \frac{12}{30}
\]

Thus, \( P(\text{blue or medium}) = \frac{12}{30} \).

The correct response is \( \frac{12}{30} \).