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The numbers of credit cards carried by 25 shoppers are:
(a) Determine the mode and median of this distribution.
(b) Calculate the mean of the distribution and compare it to the mode and median. What can you conclude about the shape of the distribution?
(c) Draw a bar chart to represent the distribution and confirm your conclusions in (b).
If the compressor efficiency is 0.8, what is the power requirement of the compressor and what is the discharge temperature of the propylene?
Need to make 250 ml of a 0.100 M solution of aluminum from a 5M stock of aluminum nitrate. What do you do?
Develop a two-dimensional addressing system using a 6-to-64 decoder, a 64-word×128- bit matrix, and 16-input multiplexers. How many gates would such a system require?
A living plant contains approximately the same fraction of carbon- 14 as in atmospheric carbon dioxide. Assuming that the observed rate of decay of carbon-14 from a living plant is 13.6 counts per minute per gram of carbon
What is the confidence interval for probability levels of 0.95 and 0.99?
How do the ratios determined in parts (a) and (b) compare? What does this tell you about which range may have more areas of practical application?
Look for information on the sulfates of gallium, sodium, and titanium in this text and reference books such as the CRC Handbook of Chemistry and Physics. What further tests would you suggest to determine which student is most likely correct?
Calculate the quantity of DCE fed to the reactor to produce 5000 kg/h VC.
Design the most efficient centrifugal pump that produces 200 gpm (45.5cumeters/hr) water flow rate at 100 psi (680 kPa) head. Specify the impellor diameter and width for a 3400 rpm service.
Using the data given in Appendix C (available online at booksite .Elsevier.com/Towler), calculate the gross and net calorific values of the gas. Give your answer in MJ/m3, at standard temperature and pressure.
The diameter of the impeller is 3 m and the impeller is installed 1,35 m abobe the bottom of the 2o ft tank. If the temperature is 30 C and the impeller is rotated at 30 r/min, what will be the power consumption ? Find the Reynolds number.
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