Scores on the mathematics portion of the Scholastic Aptitude Test (SAT) are normally distributed, with a mean average math score of 500 and a standard deviation of 100. Use this information to answer the following questions.

What proportion will score less than 350? Please round your answer to the nearest thousandth.

Question

Scores on the mathematics portion of the Scholastic Aptitude Test (SAT) are normally distributed, with a mean average math score of 500 and a standard deviation of 100. Use this information to answer the following questions.

What proportion will score less than 350? Please round your answer to the nearest thousandth.

anonymous · Answer

You need a table of values to do this problem, or a pretty good calculator.  The z value is negative 1.5, so you look it up in the table.

anonymous · Answer

Looks to me there are a few less than seven percent.  Proportion about .0668.