Question

Use the table to answer the question. Grade Burgers Pizza Wings Tacos Total 9 43 30 6 47 126 10 33 25 10 30 98 11 32 56 9 22 119 12 26 34 18 29 107 Total 134 145 43 128 450 The school administration surveyed the student body to see what type of food they would prefer to have at the picnic on the last day of school. Their responses are recorded in the table. According to the table, what is the probability that a randomly selected student is in 9th grade and chose pizza? (1 point) Responses 60% 60 percent 24% 24 percent 7% 7 percent 21% 21 percent Skip to navigation

Answer 1

To find the probability that a randomly selected student is in 9th grade and chose pizza, we need to look at the values from the table.

From the table:

• The number of 9th graders that chose pizza = 30
• The total number of students surveyed = 450

The probability can be calculated using the formula:

\[ P(\text{9th grade and pizza}) = \frac{\text{Number of 9th graders who chose pizza}}{\text{Total number of students}} \]

Substituting the values:

\[ P(\text{9th grade and pizza}) = \frac{30}{450} \]

Now, we simplify the fraction:

\[ P(\text{9th grade and pizza}) = \frac{30 \div 30}{450 \div 30} = \frac{1}{15} \]

To convert this into a percentage, we multiply by 100:

\[ P(\text{9th grade and pizza}) = \frac{1}{15} \times 100 \approx 6.67% \]

This result is not one of the options you've presented. However, rounding this value gives approximately 7%.

So, the answer would be:

7%