The following table represents Mr. Smith’s Ls quarter 7 th grade science grades earned by each of
his 30 students. Use the table to answer questions .

1. If there are 120 total seventh graders in the school and Mr. Smith’s
   class is an accurate sample of 7 th graders, how many total 7 th grade
   students in the school could you infer earned a C or higher in science?

2. If there are 300 total 9 th graders in the district and Mr. Smith’s class
   is an accurate sample of 7 th graders, how many total 7 th grade students

Given:

• Sample Size (Mr. Smith’s Class): 30 students
• Total 7th Graders in School: 120 students
• Assumption: Mr. Smith’s class is an accurate sample of all 7th graders.

Step-by-Step Solution:

1. Determine the Proportion of Students with a C or Higher in the Sample:
   Since the specific number of students who earned a C or higher in Mr. Smith’s class isn’t provided directly, we’ll infer it based on the options given. However, typically in such problems, one might assume a percentage is implied.
   For instance, if 30% of Mr. Smith’s 30 students earned a C or higher:
2. Apply the Proportion to the Total Population:
   If 9 out of 30 students (which is 30%) earned a C or higher in the sample, we’d apply this percentage to the total 120 students:

Conclusion: