Math 7B Unit 9 Study Guide
10. The data from two random sample of 100 students regarding what pet they own is given below.
X X
Sample 1
Sample 2
Horse
5
7
Dog
48
61
Cat
47
32
Total
100
100
Based on the two samples, what percentage of students own a horse as a pet?
XXX
* ++
x
7
To find the percentage of students that own a horse as a pet, we need to add the number of students in each sample that own a horse and then divide by the total number of students in both samples.
Sample 1: 5 students own a horse
Sample 2: 7 students own a horse
Total students owning a horse = 5 + 7 = 12
Total number of students in both samples = 100 + 100 = 200
Percentage of students owning a horse = (12/200) * 100% = 6%
Therefore, 6% of students own a horse as a pet based on the two samples.