Posted by **michelle** on Wednesday, January 4, 2012 at 11:34pm.

The weight of a small Starbucks coffee is a random variable with a mean of 360 g and a standard

deviation of 9 g. Use Excel to find the weight corresponding to each percentile of weight.

a. 10th percentile b. 32nd percentile c. 75th percentile

d. 90th percentile e. 99.9th percentile f. 99.99th percentile

- statistics help wanted -
**drwls**, Wednesday, January 4, 2012 at 11:42pm
If you list the subject where is says "subject", instead of the university, you will usually get quicker results.

Since they are asking for a solution using Excel, I can't help you. There are many other ways to do this problem.

- statistics -
**PsyDAG**, Friday, January 6, 2012 at 12:36pm
I don't use Excel.

Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions and their corresponding Z scores. Insert values into equation above and calculate the scores.

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