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anonymous
 5 years ago
On a standardized test with a normal distribution, the mean was 64.3 and the standard deviation was 5.4. what percentile is a 74?
anonymous
 5 years ago
On a standardized test with a normal distribution, the mean was 64.3 and the standard deviation was 5.4. what percentile is a 74?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ok. Sorry I couldn't help. When is it due?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Aite. I'll post an answer here when I'm back in an hour or two.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0and no one else is answering it i keep postin git

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0did you get the answer for this question yet?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0First step is to find the zscore of the number 74. To do this, we use the formula \[z = (x  \mu)/\sigma\] Where x = 74; \[\mu= 64.3 (Mean)\ ; \sigma = 5.4 (Standard deviation) \] So z = 1.7962. Now for the second step, if my memory serves me correctly, would be to look in the back of your statistics book for the table that relates the zscore to an area or percentile. Hope this helps; sorry I couldn't respond sooner or with the complete answer to the problem.
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