The average score of 100 students taking a statistics final was 70 with a standard deviation of 7. Assuming a normal distributio
n, what test score separates the top 5% of the students from the lower 95% of students?
1 answer:
Answer:
Hence, the answer is 
Step-by-step explanation:
We have,

The top percentage of the students is 
The lower percentage of the students is 
The lowest
is the left area from the normal distribution table, the area
lies in the z-table
from the z- table




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Step-by-step explanation:
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60 + 12 = 72
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Answer:
5
Step-by-step explanation:
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Answer:
-12
Step-by-step explanation:
f(-9) = 2/3(-9) + (-6)
f(-9) = -6 + (-6)