Advertisers contract with Internet service providers and search engines to place ads on websites. They pay a fee based on the number of potential customers who click on their ad. Unfortunately, click fraud—the practice of someone clicking on an ad solely for the purpose of driving up advertising revenue—has become a problem. According to BusinessWeek 43% of advertisers claim they have been a victim of click fraud. Suppose a simple random sample of 300 advertisers will be taken to learn more about how they are affected by this practice. Use z-table.

a. What is the probability that the sample proportion will be within +- 0.03 of the population proportion experiencing click fraud?

(to 4 decimals)

b. What is the probability that the sample proportion will be greater than 0.49?

(to 4 decimals)

Sales Tax

Far and Wide Broadband provides Internet connection services to customers living in remote areas. During February 2020, it billed a customer a total of $295,000 before taxes. Weston also must pay the following taxes on these charges:

1. State of Kansas sales tax of 6%
2. Federal excise tax of 0.2%
3. State of Kansas excise tax of 0.4%

Required:

Assuming Far and Wide collects these taxes from the customer, what journal entry would Far and Wide make when the customer pays their bill? If an amount box does not require an entry, leave it blank.

On July 1, 2017, Oriole Co. pays $13,740 to Waterway Insurance Co. for a 3-year insurance policy. Both companies have fiscal years ending December 31. Journalize the entry on July 1 and the adjusting entry on December 31 for Waterway Insurance Co. Waterway uses the accounts Unearned Service Revenue and Service Revenue.

Calculate the activity in mCi and MBq of In-113 produced by irradiation of 1 g of pure Cd-111 for 3 hr with 12 MeV protons having a beam intensity of 1x10¹³ particles/(cm²-sec). The cross section for formation of In-111 (T = 2.8 d) is 200 millibarns ( 1 mb = 1x10^-27 cm²). Recall 1 mCi = 37 MBq

1. Tell whether the lines are "parallel", "perpendicular", or "neither."
9x + 3y = 12
12x + 4y = 18

2. Write an equation of the line described.
Through (7, 1), parallel to -8x + 7y = -28

3. Do you prefer to use the method of plotting points or the method using the intercepts to graph an equation? y=2/3x-27? why

In an R.C. circuit, a 60 volt battery charges a 27 microfarad capacitor. It discharges in a resistance of R. The voltage of the capacitor is 30 volts after 4.6 milliseconds. Find the following:

1: the time constant of the circuit

2: the maximum charge

3: the capacitor's charge after half of the time constant

4: the amount of time that it takes for the capacitor to get to a voltage of zero

Question 1:   The marketing department for your electronics company has determined the relationship between price and demand for a new smartphone: Price ($) = 150 – 0.01 x (Monthly Demand) The fixed costs for this item are $50,000 per month, and the variable cost per unit is $40.   Determine: a) What is the optimal production volume per month for this product? b) What is the maximum profit per month? c) What is the domain of profitable demand? d) Prepare a spreadsheet and chart that shows cost, revenue, and profit. (Use the chart type scatter with smooth lines, over a range of demand from 0 to 12,000 units per month. The chart must include axis titles and a legend that identifies the three curves.

Question 2: You hope to sell a product for $575 that has a variable cost per unit of $335.  Your fixed cost is from rent on the fully‐furnished factory in which your product is manufactured. a) If you sell 9000 units per year, what is the maximum monthly rent you can afford to pay in order to break even? b) If the rent was actually $58,000 per month, then what is your annual profit if you sell 7000 units per year?

Question 3: A regional airline is considering the addition of winglets to its CRJ200 aircraft, at a cost of $375,000 per plane. The winglets improve fuel economy from 3150 lbs of fuel per hour to 3020 lbs/hr. Assuming a fuel cost of $0.27 per lb, and an interest rate of 1% per month, how many hours each month must be flown in order for this upgrade to break even within 3 years?

Question 4: Your company has been renting forklifts at a cost of $7500 (each) per year.  If your company upgrades the warehouse to an integrated robotic system, then forklifts would no longer be needed. The upgraded warehouse costs $208,000 to construct, $11,000 each year to maintain, and will have a useful life of 25 years.  For an interest rate of 5% per year, how many forklifts could be rented each year and break even with the cost of the upgraded warehouse?  

Question 5: You have invested $26,500 to obtain equipment that enables you to generate $4550 in revenue each month, with monthly costs of $1725. For a monthly interest rate of 3%, how many months are required for you to pay off your initial investment?

Question 6: Your company has purchased surveying equipment for $43,500, and will utilize it for 8 years before selling it for $3250.  How much new revenue must this equipment generate each year in order to pay off the equipment and realize a return of 6% per year?  Note: solve this problem with the factor method or equation method, and then also set up a spreadsheet illustration of ‘Unrecovered Investment Balance’.  (Hint: we’ve done spreadsheets like this before, on HW 7 and ICE 12).

Discuss the trends in the revenue for McDonalds. Is this a problem?

2/ impact in the equity of revenue and expenses