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September 17, 2014

September 17, 2014

Posted by **Katy** on Saturday, February 23, 2013 at 8:33pm.

Can you check these answers first?

greater than 600 =30.853

greater than 750=2.275

less than 400=6.681

between 400 and 600=62.465

what score represents Q3?

what score separates the top 70% from the bottom 30% ?

- Math Helpppp -
**PsyDAG**, Sunday, February 24, 2013 at 11:52amZ = (score-mean)/SD

Z = (600-550)/100 = 50/100 = .5 = 30.85%

>750 = 2.28%

< 400 = 6.68%

>440 and < 600 = 62.47

Apparently your table has 5 decimal places.

Use the table to find the Z scores for .75 and .30 and insert those in the equation above.

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