Thursday

November 27, 2014

November 27, 2014

Posted by **Joe** on Thursday, January 18, 2007 at 9:25pm.

Use a z-score formula to find John's raw score.

The formula: z = (x - mean)/sd -->sd = standard deviation

Using what you know to find what you don't know:

1.3 = (x - 480)/70

Solve for x.

I hope this will help.

**Answer this Question**

**Related Questions**

Statistics - bob received a z score of 0.9 on a college entrance exam. If the ...

statistics - say that you have a distribution of exam scores with a mean of 57 ...

statistics - Scores on a national exam assume a normal distribution with a ...

Statistics - In Professor Smith's statistics course, the correlation between ...

Statistics - 5. Scores on a recent national statistics exam were normally ...

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

Statistics - In Professor White’s statistics course the correlation between the ...

statistics - Suppose that the mean score of an exam was 77 when taken 30 ...

statistics - Suppose that the mean score of an exam was 77 when taken 30 ...

Analytical Skills - If your score on a statistics exam was 76 and the professor ...