Wastewater samples taken from an industrial discharge had the chemical oxygen demand (COD) concentrations below in mg/L.

Question:

Wastewater samples taken from an industrial discharge had the chemical oxygen demand (COD) concentrations below in mg/L. Determine the

(a) Arithmetic mean (by hand and spreadsheet),

(b) Median,

(d) Standard deviation (by hand and spreadsheet).

COD values: 452, 364, 415, 395, 404, 470, 391, 395, 425, 430, 380

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Engineering Economy

ISBN: 978-0073523439

8th edition

Authors: Leland T. Blank, Anthony Tarquin

See More Books

Question Posted: Dec 26, 2018 09:15 AM

See More Questions

1. What action did the Board take after investigation of the charges? 2. Did the court of appeals uphold the Board? On what ground? 3. Does the NLRA compel agreements between employers and employees?...
1. May an individual employee compel his or her union to progress his or her grievance to arbitration when the employee is convinced that he or she has been wrongfully terminated? 2. What discretion,...
Chumpy Lighting Limited manufactures a wide variety of light bulbs which it sells to lighting shops and builders merchants through wholesale distributors. It also sells direct to the big UK...
Evaluate the stiffness matrix for the elements shown in Figure P11-6. Let E = 100 GPa and v = 0.3? Figure P11-6, (a) (b) (25, 25.0) 2 (10, 0, 0) (40, 0,0) (25, 0, 25) (10, 7, 0) (4, 2, 0) (12, 2, 0)...
McBain Electronics completed the following investment transactions during 2016 and 2017: 2016 Dec. 12 Purchased 1,500 shares of Blackmore Ltd. at a price of $62.00 per share, intending to sell the...
Jill is a registrant and performed some consulting work for a US company from her home office in Fredericton, New Brunswick. She is not sure whether she needs to charge HST or if she can claim input...
Intuition in decision-making can expedite decision-making (versus cognitive domains that are slow and deliberate), but it can fail or mislead us, too. How can that be?
Nelson Fabricators sells a portable EKG machine. The sales manager requires a weekly forecast of the portable EKG machine so that he can schedule production. The manager uses exponential smoothing...
MyBnB started a home rental company on January 1. As of November 30, MyBnB reported the following balances. The company does not yet have a balance in Retained Earnings because this is its first year...
Fly-by-Night is an international airline company. Its fleet includes Boeing 757s, 747s, 727s, Lockheed L-1011s, and McDonnell Douglas MD-83s, MD-80s, and DC-9s. Assume that Fly-by-Night made the...
a. What two processes does the network stack provide? 12a.) The network stack implements the ________ layer process(es). a. Application b. Transport c. Physical d. Data link b. What is the maximum...
a. What are the three parts of an I P packet? b. An IP packet may include a(n) _____. a. application message or fragment b. TCP segment or UDP datagram c. Both A and B d. Neither A nor B
Start with two circles centered at the origin with radii 0 < a < b (see figure). Assume the line through the origin intersects the smaller circle at Q and the larger circle at R. Let P(x, y) have...
Show with an illustrative example how the five - stage pipeline discussed in this chapter (Fig. 2.10 ) could benefit from the Harvard architecture. Figure 2.10 FDLE S FDLES FDLES F DLES FDLES FDLES...
The Harvard architecture (Fig. 2.9 ) offers separate address and data buses for instruction codes and data. Why is not it feasible to have separate buses for programmed I/O as well? Figure 2.9 CPU...
What are the advantages of systems on chip over computers on chip (Fig. 2.19 )? Find a few examples of commercial systems on chip from the Web. Figure 2.19 Microprocessor Processor Standard...
A watchdog timer (Fig. 2.20 ) is used for supervising the operation of an embedded system in a high - EMI environment. Why is it practical to connect the watchdog - circuit s output to the CPU s...
Show mathematically that the upper limit for CPU utilization with the rate - monotonic approach, is exactly ln 2 as stated in Equation 3.7 . Equation 3.7 lim n (2-1) 004-1
Express the solution of the given initial-value problem in terms of an integral defined function. dy/dx + e x y = 1, y(0) = 1
QUESTION 2 The CEO of Farisha Hijab Sdn Bhd insisted on further investigation to be carried out that he also required Mr Muaz to conduct the analysis of variance for the material and labour of the...
Define Innovation and identify the sources of innovation.
Describe the characteristics of a learning organization.
Describe potential sources of, and ways of managing, work stress .
Question 17: Calculate the ratio of the Coulomb force to the gravitational force, Fc/Fg, between an electron and a proton inside a hydrogen atom. What is the ratio if they are 100 km apart?
A thin walled loop with a mass of 1.50 kg and with a radius of 10.0 cm rolls down a ramp with a height h=30.0 cm. If the loop starts from rest at the top of the ramp, what will its speed be when it...
Suppose there is a uniformly charged, infinitely tall metal surface. The surface charge density is -4.0 x 10^-10 C/m2. An electron is 1.5 meters away from the wall and is launched directly at it with...

Wastewater samples taken from an industrial discharge had the chemical oxygen demand (COD) concentrations below in mg/L.

Question:

Step by Step Answer:

a Mean 452 364 415 38011 411 mgL b Arrange values in increasing order and select middle value ...View the full answer

Engineering Economy

Students also viewed these Business questions