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1. Problem 4.6, The monthly sales for Telco Batteries. Inc. Month Sales January 20 February 21 March 15 April 14 May 13 June 16 July 17 August 18 September 20 October 20 November 21 December 23 a. Plot the monthly sales data. b. Forecast January sales using each of the following: i) Naive method ii) A 3-month moving average. iii) A 6-month weighted average using .1, .1, .1, .2, .2 and .3 with the heaviest weights applied to the most recent month. iv) Exponential smoothing using an α = .3 and a September forecast of 18 v) A trend projection. c. With the data given, which method would allow you to forecast next March's sales? PX

All necessary equations must be embedded within the related problems. Please solve correctly. 2. ( \( \mathbf{2 5} \) pts) Consider the system of linear elastic springs shown below. Assume that only horizontal displacements are allowed. (a) Construct the element connectivity table. (b) Write down the element stiffness matrices. (c) Write down the global stiffness matrix. (d) Assemble the element equations to obtain the force-displacement relations for the whole system. (e) Apply boundary conditions, then construct the reduced global equilibrium equation in matrix form in terms of spring stiffness, unknown nodal displacements, and forces. Note-1: You are free to choose the minimum potential energy approach or the direct stiffness approach. Note-2: Do not renumber the nodes.

A covalent bond is typically formed when:

Two nonmetal atoms share one or more pairs of electrons.

A metal atom transfers electrons to a nonmetal atom.

Oppositely charged ions are held together by electrostatic forces.

In the foreign markets of developing countries, Multiple choice question. personal contact is a rarely used method of advertising. the labor cost of creating signs is much higher than in the United States. advertisers are hindered by excessive government restrictions on outdoor advertising. personal contact is a more widely used method of advertising than in the United States

PROBLEM #14 14. (I) An electron is projected vertically upward with a speed of

into a uniform magnetic field of 0.480 T that is directed horizontally away from the observer. Describe the electron's path in this field.

A partially-saturated soil sample has natural moisture content of

and bulk unit weight of

. The specific gravity of soil solids is 2.65 and unit weight of water is

. The unit weight of the soil sample on full saturation is A

B

C 2

D 1

Describe the steps a project manager must follow to achieve successful project completion.

A large hospital administers a “compassion burnout” survey to a random sample of nurses. The responses are scored on a scale of 0 = least burnout to 20 = most burnout. The responses of the nurses in the pediatric cancer and obstetrics units are summarized below. Use α = 5%. Assume normal distribution. Test if there is evidence that variability differs in the two groups.