Thursday

October 23, 2014

October 23, 2014

Posted by **Celest** on Wednesday, July 20, 2011 at 9:07pm.

I. Find the standard score (z) for a data value = 26.

II. Find the probability of a data value < 26.

I think the first part is z=(26-30)/4 = -4/4 = -1. I am not sure how to go about the second problem. I could use any help. Thanks

- stats -
**PsyDAG**, Thursday, July 21, 2011 at 2:09am1. Z =( score-mean)/SD

**Variance = SD squared**

2. Same equation, but find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to Z.

**Answer this Question**

**Related Questions**

Stats - A set of 50 data values has a mean of 15 and a variance of 36. Find the ...

Stats - A set of 50 data values has a mean of 15 and a variance of 25. Find the ...

statistics - A set of 50 data values has a mean of 15 and a variance of 36. Find...

Statistics - A set of 50 data values has a mean of 15 and a variance of 25. Find...

Can someone help me please? - A set of 50 data values has a mean of 15 and a ...

Help plz!! Math.... - A set of 50 data values has a mean of 15 and a variance of...

Homework Help - A set of 50 data values has a mean of 48 and a variance of 9. I...

MATH - A set of 50 data values has a mean of 18 and a variance of 4. I. Find the...

Statistics - A set of 50 data values has a mean of 35 and a variance of 25. I. ...

Someone plz help me....i need help this is due now - A set of 50 data values has...