Question

bart takes a random sample of 50 students in his seventh-grade class and finds that 40% of the sample prefers chocolate ice cream over vanilla ice cream. there are 200 students in the seventh grade. based on the sample proportion, about how many students in the seventh grade would be expected to prefer chocolate ice cream over vanilla ice cream? 40 80 50 200

Answer 1

80 students would prefer chocolate ice cream over vanilla. 50x.20=20 studentsx4=80 students

Answer 2

Answer: Second option is correct.

Explanation:

Since we have given that

In a sample of 50 students in seventh - grade class ,

Percentage of the sample prefers chocolate ice- cream over vanilla ice = 40%

So, In a sample of 200 students in the seventh - grade class,

Percentage of the sample prefers chocolate ice- cream over vanilla ice is also 40%.

So, Number of students in the seventh grade would be expected to prefer chocolate ice cream over vanilla ice cream is given by

`(40)/(100)* 200\\\\=40* 2\\\\=80`

Hence, there are 80 students in the seventh grade would be expected to prefer chocolate ice cream over vanilla ice cream.

Thus, Second option is correct.