Find the values of x and y.
1 answer:
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Answer:
8.
Step-by-step explanation:
Since this cannot be further simplified, we will calculate the square root of 57 with our calculators.
We find that the square root of 57 is 7.549834435, and since the tenths place is a 5, we will round up to the next whole number. So, the point on the number line that best represents the square root of 57 is 8.
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The top 15% (85th percentile) is the cutoff value 
such that
where
is the corresponding cutoff for the standardized normal distribution. We have 
, and so
where