Scholastic Aptitude Test (SAT) scores are normally distributed with a mean of 500 points and a standard deviation of 100 points. Suppose you take the SAT and several weeks later you receive a letter telling you that your results on the math portion of the test were in the 80th percentile.

Recalling that SAT scores are always expressed as multiples of 10, how many points did you get on the test?

A. 85
B. 580
C. 550
D. 690
E. 600

Question

Scholastic Aptitude Test (SAT) scores are normally distributed with a mean of 500 points and a standard deviation of 100 points. Suppose you take the SAT and several weeks later you receive a letter telling you that your results on the math portion of the test were in the 80th percentile.

Recalling that SAT scores are always expressed as multiples of 10, how many points did you get on the test?

A.	 85
 		B.	 580
 		C.	 550
 		D.	 690
 		E.	 600

imstuck · Answer

It's either B or C, I'm just trying to figure out which one!

anonymous · Answer

It was b lol but thanks

anonymous · Answer

The left-hand "tail" of the standard normal curve can be defined as the part of it that lies at least two standard deviations to the left of the mean.

According to the Empirical Rule, approximately what percentage of the area under the whole curve is in the left-hand tail? Round your answer to the nearest tenth. ... Can u help with this.. Lol

imstuck · Answer

That would be 2.5%

imstuck · Answer

The standard normal curve looks like this:

imstuck · Answer

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