Wednesday

October 22, 2014

October 22, 2014

Posted by **rebecca** on Thursday, August 30, 2012 at 6:58pm.

- statistics -
**MathMate**, Thursday, August 30, 2012 at 7:11pmZ-score = (X-μ)/σ

=(75-60)/15

=1

Look up normal distribution tables to find P(Z≥1)=0.8413

So 15.87% of students have better scores than 75%.

**Answer this Question**

**Related Questions**

math - Statistics: Analyze student exam scores Students were given an exam with ...

Statistics - Students were given an exam with 300 multiple-choice questions. The...

Statistics - Mrs. Marble gave her 5th grade class a math test. The scores ...

math - Students were given an exam with 300 multiple-choice questions. The ...

statistics - 2. Why is it important to know the mean and standard deviation for ...

Statistics - Suppose that two different tests A and B are to be given to a ...

statistics - Suppose scores on the mathematics section of the SAT follow a ...

statistics - Suppose scores on the mathematics section of the SAT follow a ...

AP Statistics - Sampling Distribution Help - The composite scores of students on...

AP Statistics - sampling distribution help - The composite scores of students on...