Question

1. the math teachers at miller intermediate made an experiment to determine how many delta math lesson students were completing in both the 7th and 8th grade. the results of their experiment are in shown in the table. \

$$\begin{tabular}{|c|c|c|} \\hline & 7th grade & 8th grade \\\\ \\hline 0-20 & 15 & 25 \\\\ \\hline 21-30 & 25 & 45 \\\\ \\hline more than 30 & 60 & 30 \\\\ \\hline \\end{tabular}$$

based on the results, what is the experimental probability that a student is in the 7th grade and completed more than 30 delta math lessons?

Explanation:

Step1: Calculate total 7th grade students

Add all 7th grade counts: $15 + 25 + 60 = 100$

Step2: Calculate total students overall

Sum all table values: $15+25+60+25+45+30 = 200$

Step3: Compute experimental probability

Divide 7th grade count (more than 30) by total students: $\frac{60}{200}$

Step4: Simplify the fraction

Reduce the fraction: $\frac{60}{200} = \frac{3}{10} = 0.3$

Answer:

$\frac{3}{10}$ or $0.3$