pahalsehgal
29.06.2019 •
Mathematics
Nayara wants to know the percentage of each grade level of students at her school who drive to school. she has 4 grade levels in her school.which of the following survey methods will allow nayara to make a valid conclusion about what percentage of each grade level of students drive to school?
choose 1
a. randomly select 48 students who drive to school and ask them their grade level.
b. randomly select 12 students from each grade level and ask whether they drive to school.
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Ответ:
The correct answer is B
Step-by-step explanation:
You want an even number per grade level to get comparable results.
Ответ: