Body Piercing Certification Can Some One Please Help Me With This Story Problem And The 4 Questions That Go With It. 10 Points!!!?

Can some one please help me with this story problem and the 4 questions that go with it. 10 points!!!? - body piercing certification

I do not believe for the life of me understand, I would like to help .. thank you ... Here goes:

Od At 42, Enrique Chavez begins to think more about retirement. Nearly 17 years of operation of the most popular tattoo parlors in the Bay Area, the man of the ink, it was decided to take in order to have a partner bilinguak in its 21-year-old niece, Diana. His words still echo in my head - the same words he repeated every time someone came out of his shop, go somewhere else, "Uncle perofacion It provides the body: You should provide the piercing. He said," Piercing gives people the possibility of their identity as a tattoo to express. "He was right, of course. After certification, drilling, Diana came into full-time, Henry. But it is not cheap. Between his salary and benefits, it cost the company $ 1000 per month! Henry always very detailed records, and sales in the first month is a disappointment. Piercings were offered in categories 1, 2 or 3. and costs $ 35, $ 55 and $ 75 for stainless steel jewelry, respectively, and $ 55, $ 85 and $ 120 for gold. Diana sold five categories 1, 2 a.m. to 3 p.m., stainless steel, and one of the categories 1, 2 & 3 gold.

1.) Determine the mean, median, and the method of sale for the first month of Diana.

2.) Taking into account the total value of sales for the first month of Diana, the time it takes to break even on his salary and fringe benefits, assuming an increase of 10 percent by value of all sales months? Is it likely that the increase indoubled the number of sales or a higher average sales value?

3rd) show the results of the second month of Diana, has made six sales of $ 35, $ 55 for two or three for $ 75, three and two 85 $ 120 $. Calculate the standard deviation for this data set. Your answer to the standard deviation indicates that a normal distribution is it? If not, what are the consequences?