1. What three types of validity did the authors of this article test the NPHPSP instruments on? 2. What two ways did the authors test the criterion validity?
The market demand for cigarettes are given in the following table. Price ($ per pack) 6.50 6.00 5.50 5.00 4.50 4.00 3.50 Quantity (packs per day) 40 50 60 70 & The market demand for cigarettes are given in the following table. Price ($ per pack) 6.50 6.00 5.50 5.00 4.50 4.00 3.50 Quantity (packs per day) 40 50 60 70 80 […]
A surface condenser is designed to handle 12000 kg of steam per hour. The steam enters at 8 kPa, 0.9 dry. The condensate leaves the condenser at the corresponding saturation temperature. Calculate the rate of cooling water, if cooling water temperature rise is limited to 12°C.
If consumers had an MPC of 0.90, by how much would aggregate demand have eventually increased with Obama's firstyear spending stimulus assuming the stimulus was entirely government spending (News Wire Fiscal Stimulus: Government Spending)?
A 67-year-old man with osteoporosis is being treated with once-weekly alendronate. This medication has the potential to cause which of the following unusual adverse effects? (A) A bluish hue to skin color (B) Esophageal irritation (C) Impairment of blue-green color vision (D) Priapism (E) Tendinitis
In the figure, the blue spheres represent phosphorus atoms, and the red ones represent oxygen atoms. The box labeled Initial represents a mixture. Which one of the other three boxes (A, B, or C) could not represent that mixture after a chemical reaction occurred? Explain briefly.
A.Using the arguments for state intervention outlined in this chapter, make a case for government support for: (a) small and medium-sized enterprises (SMEs), (b) urban transport, (c) railways, (d) education. B. Compare cleaning an office building with improving the air quality of a major city. Which is a public good and which a private good? Why?
Given the information in Problem 68 and an estimate of population, compare the tons of carbon dioxide released per person in China to that figure for the United States. Comment on this fact in terms of how you might approach U.S. citizens to convince them to reduce their emissions even though Chinas total emissions are greater than those of the United States.
List the five labor cost-saving activities that you believe would be most effective for (1) Best Buy, (2) your university, and (3) the U.S. Postal Service. Give a rationale for each company.
1. Air enters the compressor of an air-standard Brayton cycle at 1OO kPa, 300K with a volumetric flow ratio of 5 m 3 Is. The compressor pressure ratio is 10. The turbine inlet temperature is 1400 K. Determine (a) thermal efficiency of the cycle, (b) back work ratio. (c) net power developed in kW. 2. The pressure and temperature at the beginning of compression in […]
Supply and Demand An appliance store sells three brands of TV sets, brands A, B, and C. The profit per set is $30 for brand A, $50 for brand B, and $60 for brand C. The total warehouse space allotted to all brands is sufficient for 600 sets, and the inventory is delivered only once per month. At least 100 customers per month will demand […]
1. Your friend measures the temperature of her coffee to be 70° Celsius. Your friend also notices that the temperature outside is 35° Celsius. Why is it incorrect to say that the coffee is twice as warm as the temperature outside? 2. Describe the data for a correlational research study and explain how these data are different from the data obtained in experimental and nonexperimental […]
icycle Fund Jane has taken a part-time job to save for a $503 racing bike. If she puts $15 each week into a savings account paying 5.2% interest compounded weekly, when will she be able to buy the bike? Home Repairs Fund Bob needs $3064 to have some repairs done on his house. He decides to deposit $150 at the end of each month into […]
How does the subject of a study, as seen by potential research participants, affect research design?
A short brass cylinder (k = 110 W/m K and a = 3.39 ¥ 105 m2/s) of diameter 10 cm and height 12 cm is initially at a uni form temperature of 120°C. The cylinder is now placed in atmospheric air at 25°C, where heat transfer takes place by convection with h = 60 W/m2 K. Calculate (a) the temperature at the centre of the […]
Suppose that the price of basketball tickets at your college is determined by market forces. Currently, the demand and supply schedules are as follows: Price Quantity Demanded Quantity Supplied $4 10,000 tickets 8,000 tickets 8 8,000 & Suppose that the price of basketball tickets at your college is determined by market forces. Currently, the demand and supply schedules are as follows: Price Quantity Demanded Quantity Supplied […]
The residents of Vegopia spend all of their income on cauliflower, broccoli, and carrots. In 2020, they spend a total of $200 for 100 heads of cauliflower, $75 for 50 bunches of broccoli, and $50 for 500 carrots. In 2021, they spend a total of $225 for 75 heads of cauliflower, $120 for 80 bunches of broccoli, and $100 for 500 carrots. a. Calculate the […]
A. A thermocouple in the form of a long cylinder of 2 mm dia initially at 30ºC is used to measure the temperature of a cold gas at 160ºC. The convection coefficient over the surface is 60 W/m2K. The material properties are: density = 8922 kg/m3, specific heat = 410 J/kgK, conductivity = 22.7 W/mK. Determine the time it will take to indicate 150ºC and […]
1. . Describe the hypotheses for an independent-measures t test. 2. Describe the structure of the independent-measures t statistic and explain how it is related to the single-sample t. 3. Calculate the pooled variance for two samples and the estimated standard error for the sample mean difference, and explain what each one measures. 4. Calculate the complete independent-measures t statistic and its degrees of freedom.
A. Which of the following might lead to an increase in the equilibrium price of jelly and a decrease in the equilibrium quantity of jelly sold? a. an increase in the price of peanut butter, a complement to jellyb. an increase in the price of Marshmallow Fluff, a substitute for jelly c. an increase in the price of grapes, an input into jelly d. an […]
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