1. Why does Richardson find Malinowski’s model of ethnographic fieldwork archaic?

a) How has the traditional informant-ethnographer relationship changed?

**Reference-------article--Miles Richardson--Global World--Myth Teller

the table below shows the price quantity of demanded of packaged of pure water in nigeria. price in # = 0.5, 0.6, 0.7, 0.8, 0.8, 0.9. Quantity Demand = 160, 140, 120, 110, 90, 80. Let Xi represent the price change per unit and Yi represent the quantity demand at that price. The demand function may be postulated as; Yi =a+bXi + ei . FIND THE OLS ESTIMATE OF THE DEMAND FUNCTION AND var(a), var(b) and their respective standard error , Compute the value of the coefficient of determination (r^2) and f-statistic of the model

1.Identify the open intervals on which the function is increasing or decreasing. (Enter your answers using interval notation.) f(x) = sin(x) + 5 0 < x < 2π increasing decreasing

2. Identify the open intervals on which the function is increasing or decreasing. (Enter your answers using interval notation.) f(x) = x + 2 cos(x), 0 < x < 2π increasing decreasing

3. Consider the following function. f(x) = x + 1 x2 (a) Find the critical numbers of f. (Enter your answers as a comma-separated list.) x = (b) Find the open intervals on which the function is increasing or decreasing. (Enter your answers using interval notation. If an answer does not exist, enter DNE.) increasing decreasing (c) Apply the First Derivative Test to identify the relative extremum. (If an answer does not exist, enter DNE.) relative maximum (x, y) = relative minimum (x, y) =

4. s(t) = t3 − 5t2 + 3t − 290 (a) Find the velocity function v(t) of the particle at any time t ≥ 0. v(t) = (b) Identify the time interval(s) on which the particle is moving in a positive direction. (Enter your answer using interval notation.) (c) Identify the time interval(s) on which the particle is moving in a negative direction. (Enter your answer using interval notation.) (d) Identify the time(s) at which the particle changes direction. (Enter your answers as a comma-separated list.) t =

5. An air traffic controller spots two airplanes at the same altitude converging to a point as they fly at right angles to each other. One airplane is 75 miles from the point and has a speed of 450 miles per hour. The other is 100 miles from the point and has a speed of 600 miles per hour. (a) At what rate is the distance between the planes changing?-------- mph (b) How much time does the controller have to get one of the airplanes on a different flight path? -------h

6. An airplane flies at an altitude of y = 5 miles toward a point directly over an observer (see figure). The speed of the plane is 600 miles per hour. Find the rates (in radians per hour) at which the angle of elevation θ is changing when the angle is θ = 30°, θ = 60°,and θ = 80°. (a) θ = 30° rad/hr (b) θ = 60° rad/hr (c) θ = 80° (Round your answer to two decimal places.) rad/hr

7. The formula for the volume of a cone is given below. Find the rate of change of the volume for each of the radii given below if dr/dt is 8 inches per minute and h = 18r. V = (1/3)πr2h (a) r = 9 in V' = π in3/min (b) r = 30 in V' = π in3/min

You have estimated how Stock A’s return will vary.

Economy                      Probability                         Return

Below average                0.3                                     -6%

Average                           0.4                                      12%

Above average               0.3                                      26%

What is the standard deviation of Stock A?

Stock B has an expected return of 15%, and a standard deviation of 20%. The returns of the two stocks are not perfectly correlated; the correlation coefficient is 0.7. You have put together a portfolio that consists of 50% Stock A and 50% Stock B. What is the expected return of your portfolio and what is the standard deviation of your portfolio?

Daniel measures the volume of several raindrops at Jonestown as 0.6 ml, 0.65 ml, 0.7 ml, 0.75 ml, 0.8 ml and 0.85 ml; and comes to believe that the raindrops at Jonestown are significantly larger than the national average of 0.65ml at the 5% level.

If daniel does the appropriate statistical test, what will be his conclusion?

Caro Manufacturing has two production departments, Machining and Assembly, and two service departments, Maintenance and Cafeteria. Direct costs for each department and the proportion of service costs used by the various departments for the month of August follow: Proportion of Services Used by Department Direct Costs Maintenance Cafeteria Machining Assembly Machining $ 125,000 Assembly 84,000 Maintenance 52,000 — 0.2 0.5 0.3 Cafeteria 33,000 0.6 — 0.2 0.2 Required: Use the reciprocal method to allocate the service costs. (Matrix algebra is not required.) (Negative amounts should be indicated by a minus sign. Do not round intermediate calculations.)

A a = 0.55 (m) × b = 0.3 (m) concrete box with Manning roughness coefficient of n = 0.016 is to be placed under a roadway. During the T = 100 years design storm, it is expected that water will pond behind the culvert to a height h = 0.2 (m) above the crown of the culvert. If the culvert entrance is to be rounded with the exit loss coefficient of Ke = 0.2 and discharge coefficient of Cd = 0.45. If the slope of the culvert is S% = 0.2 and the length of the culvert is L = 4 (m),

1. estimate the flow rate through the culvert.
2. If the flow rate drops down to 20% of the design storm, estimate the depth of water behind the culvert.

XYZ hotel uses approximately 200 towels daily. It operates 250 days a year. Assuming, lead time is normally distributed with a mean of 2 days and a standard deviation of 0.5 day. The management desires 90 percent service level. Annual carrying costs is $0.8 per towel, and ordering costs is $20. Given the production rate for the towel = 600 towels per day.

1. Determine the optimal order quantity?
2. Determine Safety Stock?
3. The sales people have recently told the top management that they could expect $200 improvement in profit if the service level were increased to 99%. Is it worthwhile for XYZ hotel to make this change?

an insurance company crashed four cars in succession at 5 miles per hour. the cost of repair of the four crashes was $429 $459 $318. Compute the range, sample variance, and sample standard deviation cost of repairs