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- A semiconductor manufacturer produces devices used as central processing units in personal computers. The speed of the devices (in megahertz) is important because it determines the price that the manufacturer can charge for the devices. The following table contains measurements on 20 devices. a. What is the D3 of the data? b. What is D8 of the data? c. What is the P50 of the data? d. What is the P75 of the data? e. What is the Q3 of the data?An appliance store sells additional warranties on its refrigerators. Twenty percent of the buyers buy the limited warranty for $100 and 5% buy the extended warranty for $200. What is the expected revenue for the store from the warranty if it sells 120 refrigerators?4 On December 13,2012, you could read in The New York Times that the piano from Rick's place in the 1942 movie Casablanca is up for auction. "Sotheby's expects (it] to sell from $800,000 to $1.2 million in the auction on Friday. That is between 34 to 48 times what [Ingrid) Bergman was paid for sharing top billing with Humphrey Bogart: (R252) (a) How much was Ingrid Bergman paid for her role in the film? Calculate this two ways using the data in the quotation and comment on what you discover. (b) Would adjusting her pay to take inflation into account allow her to bid on the piano in 2012? (c) What compound interest rate would she have to have earned on her pay to bid on the piano in 2012? (d) Find out what happened at the auction.
- (T3) 10. Which statistic below is the best example of incidence of a disease? - [ ] In 2005, 2 million people died from HIV - [ ] A total of 65 million people have gotten HIV - [ ] In 2005,4 million people acquired HIV - [ ] A total of 40 million people have died from HIV infection - [ ] 25 million people currently suffer from HIV infectionA national chain of department stores ranks its 1,250,000 salespeople by the monetary value of their sales. Goran's sales are at the 78th percentile. Lena's sales are at the 56th percentile. (a) Which of the following must be true about Goran's sales? Goran had sales lower in value than about 78% of the salespeople. The value of Goran's sales were about 78% of the chain's total. Goran had sales higher in value than about 78% of the salespeople. The value of Goran's sales were about 22% of the chain's total. (b) Which of the following must be true about Goran's and Lena's sales? Lena's sales were higher in value than Goran's sales. Both Goran and Lena had sales higher in value than the median. The value of Goran's sales were $2200 more than Lena's. The values of both Goran's and Lena's sales were in the bottom half of all of the salespeople.Q4. The stock prices of two companies are given below. Find their Coefficient of variation suggest the best company for investment with justification. Company A(OMR) 40 38 42 40 39 39 43 40 39 40 Company B(OMR) 46 37 40 33 42 36 40 47 34 45
- A restaurant owner wanted to improve the efficiency of her employees in an attempt to cut costs. One way she tried to do this was to buy a machine that would automatically dispense 32 oz. of soda into the large sized cups rather than have the employee hold the button on the dispenser. The actual amount dispensed by the machine can be represented by the model X~N(32.2, 0.4). How many ounces will a cup at the 53rd percentile hold?Cigarette Use The percent of 12th graders who haveever used cigarettes for each of the years 2000 through2014 can be modeled by p = -1.873t + 60.643,where p is equal to the percent and t is equal to number of the years after 2000. When will the percent beless than 27%, according to this model?d) Prepare the scatter diagram and insert the trendline or line of best-fit. Use a scale of 2 cm to represent 1,000 units on the x-axis & 2 cm to represent $50,000 on the yaxis.e) Using the line of best-fit, determine the company’s fixed cost per month and the variable cost per unit. (Use 0 & 5,000 units.)f) Which of the two methods appear more appropriate? Explain your answer
- Q4A The World Bank collected data on the percentage of GDP that a country spends on health expenditures ("Health expenditure," 2013) and also the percentage of women receiving prenatal care ("Pregnant woman receiving," 2013). The data for the 15 countries where this information are available for the year 2011 is in the table below: Health Expenditure (% of GDP) Prenatal Care (%) 9.6 47.9 3.7 54.6 5.2 93.7 5.2 84.7 10.0 100.0 4.7 42.5 4.8 96.4 6.0 77.1 5.4 58.3 4.8 95.4 4.1 78.0 6.0 93.3 9.5 93.3 6.8 93.7 6.1 89.8 1. Determine the correlation between variables (if it exists) in this relation. Which variable is the dependent (output) variable? A. Percent of women receiving prenatal care B. Percent of gross domestic product (GDP) spent on healthcare Enter letter corresponding to correct answer 2. Using technology, determine coefficient of correlation r Enter r value to…The boxplot below shows salaries for Construction workers and Teachers. If a person is making the maximum salary for a construction worker, they are making more than what percentage of Teachers?They are making more than % of Teachers.A local softball league is raffling off $1000.00. You can buy one ticket for $4.00, three tickets for $10.00, five tickets for $16.00, or ten tickets for $30.00. Assume the league sells 500 tickets. Should you buy one, three, five, or ten tickets to maximize your expected winnings?
