Claim: There is a significant correlation between test 1 scores and the hours a student spent studying.

Use the data-analysis add-in to complete the hypothesis test for the correlation coefficient using level of significance of 0.05.

Honeywell Bakery has been offering a new vegan cupcake and wants to know the demand in the future. For the past six weeks, the demand has been 60 cupcakes, 55 cupcakes, 75 cupcakes, 60 cupcakes, 80 cupcakes, and 75 cupcakes respectively. 1. a) Using a simple four-week moving average, calculate a forecast for next week. (4 points) b) If the forecast for week 6 was 85 cupcakes, then using single exponential smoothing with α=0.2, calculate a forecast for next week. (4 points) 2. a) Using simple linear regression, calculate the trend line for the historical data. X- Axis should represent the period (e.g. week 1 = 1, week 2 = 2, and so on), while the Υ axis is demand. (12 points) b) Calculate a forecast for next week. Is this forecast different from the ones calculated in 1a and 1b? If so, please explain the difference. (10 points)

The inventory records of Ezra Corporation reflect the information shown below for the month of August. The company values its inventory on a monthly periodic basis.

Determine the dollar amounts of ending inventory and cost of goods sold at the end of August under each of the inventory valuation methods listed. Enter your responses in the Response Template. (12 points total, 2 points each)

question 10

wet water company drills residential and commercial wells the company is in the process of analyzing the purchase of a new drill information on the proposal is provided below:

initial investment:

asset $80000

working capital 16000

operations per year for four years :

cash receipts $80000

cash expenditures 444000

disinvestment:salvage value of drill

end of year four ) $8000

discount rate 10 percent

note: other than the initial investment cash flows are end of period the working capital is returned at the end of the investment period

1- what is the net present value for the wet water company new drill ?

1-$23579.26

2-$34507.48

3-$12651.05

4-$96000

5-$1722.83

2-in what range is the internal rate of return for the wet water company new drill ?

1-8% to 12%

2-20% to 24%

3-12% to 16%

4-16% to 20%

5-greater than 24%

Consider the following hypotheses tests involving the χ²-distribution.

(a) Determine the p-value for H_o: P(1) = P(2) = P(3) = P(4) = 0.25, with χ² = 10.95. (Give your answer bounds exactly.)
______< p <_____

(b) Determine the p-value for H_o: P(I) = 0.25, P(II) = 0.40, P(III) = 0.35, with χ² = 8.57. (Give your answer bounds exactly.)
_____ < p <______

Consider the null hypotheses for the following multinomial experiments. (Give your answers correct to two decimal places.)

(a) Determine the critical value and critical region that would be used in the classical approach to test H_o: P(1) = P(2) = P(3) = P(4) = 0.25, with α = 0.01.
χ²  ______

(b) Determine the critical value and critical region that would be used in the classical approach to test H_o: P(1) = 0.25, P(2) = 0.40, P(3) = 0.35, with α = 0.025.
χ²  _______

Data collected on the yearly registrations for a Six Sigma seminar at the Quality College are shown in the following​ table:

a. Calculate the forecasted registrations for years 2 through 12 using exponential smoothing, with a smoothing constant (α) of 0.40 and a starting forecast for 5.00 year 1 (round your responses to one demical place):

b. Mean absolute deviation based on the forecast developed using the exponential smoothing method (with a smoothing constant (α) = 0.40 and a starting forecast of F1 = 5.00) is _____ registrations (round your response to one decimal place)

QUESTION 1

1. What is NOT a solid reason to recommend sputtering in Argon instead of e-beam deposition?

   	1.	You want purer films with no trapped inert gas.
   	2.	You want better film adhesion.
   	3.	You want to deposit a multicomponent film like, TiW.
   	4.	You want better step coverage.

10 points   

QUESTION 2

1. What is NOT a solid reason to recommend e-beam deposition of aluminum over sputtering in Argon?

   	1.	We want the higher throughput (# wafers processed per hour) offered by e-beam deposition.
   	2.	The high temperatures required to get an acceptable deposition rate will scorch the aluminum film and degrade its resistivity.
   	3.	We want to avoid damaging the wafer by exposing it to a plasma.
   	4.	We want "line of sight" deposition to create special features that rely on portions of the wafer being blocked from deposition.

A machine costs $10,000 and has a discount rate of 7.5%. Calculate the profitability index of the project if the net present value of cash inflows is $4,600 in year 1, $3,400 in year 2, $2,600 in year 3, and $1,500 in year 4 when the machine is sold to salvage dealer.
A. 2.38
B. 2.21
C. 2.04
D. 1.21
E. 1.04

. A project costs $6,000 and has a discount rate of 7.5%. Calculate the profitability index of the project that has cash flows of $5,200 in year 1 and $4,500 in year 2.
A. 1.62
B. 1.14
C. 1.80
D. 1.46
E. 1.14

A project costs $15,350 and has a discount rate of 8.5%. Calculate the profitability index of the project that has cash flows of $3,500 in years 1 and 2, $4,000 in year 3, $3,200 in year 4 and $2,800 in year 5.
A. 0.88
B. 0.75
C. 0.24
D. 0.12
E. 1.28

Ahmad choosing between two goods, X and Y, and your marginal utility from each is as shown in the table below. If your income is $12and the prices of X = $2 and price of Y is $2.

1. What quantities of X and Y should be purchased to maximize utility?

2. What total utility will the consumer realize at these quantities founded in part 1?

3. Assume that, other things remaining unchanged, the price of Y falls to $1. What quantities of X and Y will you now purchase to maximize utility?

4. Using the two prices and quantities for good Y, derive a demand schedule for good

public class IntNode      
        {
           private int data;
           private IntNode link;
           public IntNode(int data, IntNode link){.. }
           public int     getData( )          {.. }
           public IntNode getLink( )           {.. }
           public void    setData(int data)     {.. }
           public void    setLink(IntNode link) {.. }
        }

All questions are based on the above class, and the following declaration.  

// Declare an empty, singly linked list with a head and a tail reference.

// you need to make sure that head always points to the head node and tail always points to the tail node.
         IntNode head, tail;
         head = tail = null;    

// 1.) Insert a node with data 2 into this empty list

// 2.) Insert a node with data 4 at the end of the list.

// 3.) Insert a node with data 3 between the first and the last node.

// 4.) Insert a node with data 1 before the first node.

// 5.) delete the node with data 2

// 6.) delete the node with data 1