Homework Help: stats

Posted by sue on Thursday, March 12, 2009 at 7:46pm.

Our students were asked to rate their admiration of Hillary Rodham Clinton on a scale of 1 to 7. They were asked to rate their Jennifer Lopez and Venus Williams on a scale of 1 to 7. The mean rating of Clinton was 4.06 with a standard deviation of 1.70. The mean rating of Jennifer Lopez was 3.72 with a standard deviation of 1.90 and the mean rating of Venus Williams was 2.58 with a standard deviation of 1.46. One of our students rated her admiration of Clinton and Williams at five and her admiration of Lopez at 4.
a.

Responses

stats(help) - Sue , Thursday, March 12, 2009 at 5:49pm
1)
What is her z score of her admiration rating of Clinton?
I know I am suppose to use the population formula( right?)
5-4.06/1.70=0.55
Please explain to me what I am doing incorrectly.

stats - Reiny, Thursday, March 12, 2009 at 9:22pm
I get exactly the same result.

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