ComputerScienceExpert

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    Devry
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    Devry University
    Mar-2010 - Oct-2016

Category > Math Posted 21 Apr 2017 My Price 8.00

The national average for the math portion

Hello

Can someone help me with the following please?

 

The national average for the math portion of the College Board's SAT test is 550. The College Board periodically rescales the test scores such that the standard deviation is approximately 75. Answer the following questions using a bell-shaped distribution and the empirical rule for the math test scores.

If required, round your answers to two decimal places.

(a)

What percentage of students have an SAT math score greater than 625?

%

(b)

What percentage of students have an SAT math score greater than 700?

%

(c)

What percentage of students have an SAT math score between 475 and 550?

%

(d)

What is the z-score for student with an SAT math score of 630?

(e)

What is the z-score for a student with an SAT math score of 395?

Answers

ComputerScienceExpert
(11)
Status NEW Posted 21 Apr 2017 07:04 AM My Price 8.00

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file 1492759852-Solutions file 2.docx preview (51 words )
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