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gogolik [260]
3 years ago
13

Emma sells jewelry online. She has found that when she sells each piece of jewelry for $20, she sells an average of 23 pieces of

jewelry every month. Emma has also found out that when she increases the price of jewelry by $5, the number of pieces sold per month decreases by an average of 7.
Emma's profit per month is given by the polynomial below, where x is the number of $5 increases in jewelry price over $20.

P(x) = $460 - $25x - $35x2
Mathematics
1 answer:
djverab [1.8K]3 years ago
4 0
Faded f f f devastated
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Complete Question:

Each night you total the day's sales and the total volume of ice cream sold in your shop. You notice that when an employee named Ben works, the mean price of the ice cream sold is $2.30 per pint with a standard deviation of $0.05. On nights when an employee named Jerry works, the mean price of the ice cream sold is $2.25 per pint with a standard deviation of $0.35. Which employee likely receives more complaints that his servings are too small? Explain.

Answer:

The employee that likely receives more complaints that his servings are too small is Jerry.

Step-by-step explanation:

a) Data:

Ben's mean price of ice cream sold = $2.30 per pint

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b) Whereas the mean price of Ben's ice cream is $2.30, Jerry's mean price is less by $0.05, more than 20%.  On the other hand, the standard deviation of Ben's mean price is $0.05 (about 2.2% variation), while Jerry's is $0.35 representing about 15.6% variation.  This means that the variations in Jerry's price are far too much when compared to Ben's.

c) Percentages of Variations:

Ben = $0.05/$2.30 * 100 = 2.2%

Jerry = $0.35/$2.25 * 100 = 15.6%

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