A random sample of students was surveyed and asked to list their grade level and whether or not they have a pet.

Question

29 seventh graders said they don't have a pet.
48 seventh graders were surveyed.
30 eighth graders were surveyed.
39 total students said they don't have a pet.

Fill in the missing values in the table below.

Pets Survey
Pets No Pets Total
7th grade
8th grade
Total
Answer
Attempt 1 out of 20

Answer 1

To fill in the missing values in the table, we'll first organize the information provided:

1. For seventh graders:

   • Total surveyed: 48
   • Number who don't have a pet: 29
   • Therefore, the number who have a pet = Total surveyed - No pets = 48 - 29 = 19.

2. For eighth graders:

   • Total surveyed: 30.
   • The total number of students who don't have a pet is given as 39.
   • Total who don't have pets (7th + 8th): 29 (from 7th) + (Number of 8th graders who don't have pets).
   • Since 39 total students said they don’t have a pet, that means the 8th graders who don’t have pets = 39 - 29 = 10.
   • Therefore, the number of 8th graders who have pets = Total surveyed - No pets = 30 - 10 = 20.

Now we can summarize the information into the table:

Pets Survey:

| | Pets | No Pets | Total | |-------------|------|---------|-------| | 7th grade | 19 | 29 | 48 | | 8th grade | 20 | 10 | 30 | | Total | 39 | 39 | 78 |

Final Table:

| | Pets | No Pets | Total | |-------------|------|---------|-------| | 7th grade | 19 | 29 | 48 | | 8th grade | 20 | 10 | 30 | | Total | 39 | 39 | 78 |

So, the missing values in the table are:

• 7th grade Pets: 19,
• 8th grade No Pets: 10,
• Total Pets: 39.