Saturday

December 20, 2014

December 20, 2014

Posted by **K.T** on Sunday, January 3, 2010 at 4:11pm.

does anyone know how to solve this?

- statistics -
**bobpursley**, Sunday, January 3, 2010 at 4:52pmhttp://davidmlane.com/hyperstat/z_table.html

I get below 50.3

- statistics -
**K.T**, Sunday, January 3, 2010 at 4:57pmmy friend came out with the following solution.

P(Z<-0.675)=0.25

-0.675= (X-64)/7

but i'm kinda confused.

where did the 0.675 come from?

- statistics -
**bobpursley**, Sunday, January 3, 2010 at 8:39pmGood question; ask your friend. It makes no sense. See the link I posted.

**Answer this Question**

**Related Questions**

college - Suppose that, for a certain exam, a teacher grades on a curve. It is ...

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

statistics - In a large class, there were 220 students who wrote both the ...

Statistics - 1. The mean and standard deviation of the grades of a group of ...

Statisitics - In a large section of a Chemistry class, the points for the final ...

statistics - Percentage grades in a large physics class follow a normal ...

statistics - If the grades on a police entrance exam are normally distributed ...

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 ...

statistics - 2. The grades on a statistics midterm exam were normally ...