Scores on the ACT exam have a N(μ = 18,σ = 6) distribution, while scores on the SAT
1 answer:
Answer:
Emily has a higher relative score since her z-score is higher. This would mean she scored further above the mean than Xiaoyu.
Step-by-step explanation:
Find the z-scores by subtracting the score they got by the mean and then dividing by the standard deivation of their respective exams.
Xiaoyu:
z = = 1.5
Emily:
z = = 2.2
______
Emily has a higher relative score since her z-score is higher. This would mean she scored further above the mean than Xiaoyu.
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Answer:
Devon use instead of
in his reason. So, we can say that triangles are not similar.
Step-by-step explanation:
If two triangles are similar then their corresponding sides are proportional.
If triangle TUV and XYZ are similar, then
The reason given be Devon is
He use the correct concept, that the corresponding sides of similar triangle are proportional. But he use instead of
in his reason.
Therefore his reason is incorrect. So, we can say that triangles are not similar.