The answer to #1 is D.
The answers to #2 is B,C,D,F.. I'm not sure what the remainder of G says..
Answer:
Step-by-step explanation:
500=140+40h
minus 140 both sides
360=40h
divide y 40
9=h
9 hours
Statistic significance requires that your sample be representative of the population, but I'm struggling with this because if the class is an elective then the answer would be: <span>No, it is not a valid inference because she asked all 22 students in her science class instead of taking a sample of the students in her school.
BUT if the class is required, as most science classes are, then it WOULD be a random sample of the school. So the last option would be correct.
My guess though is that the teacher is looking for answer B.
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