Variable
Step-by-step explanation:
Answer:
1.Amy should ask every 10th person leaving the school at the end of the day and Amy should ask the 50 students in her computer lab.
2.Yes,the sample is unbiased and equal to everyone.
3.200
Step-by-step explanation:
84 because 36 x 2 =72 and then 1/3 of 36 is 12 and 12+72=84
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