The monthly average sales of the Smiling Ninja Computer Company may be approximated to a normal distribution curve. It has a mean of $22,000 and a standard deviation of $3,300.
Drawing a curve for each question, calculate the proportions of the following:
a. The proportion of sales greater than $21,500 per month;
b. The proportion of sales less than $21,000 per month;
The proportion of sales between $22,500 and $24,500
Attachment:- 244518_1_UIC-Quant-Methods-Assignment-S3-2012.doc