Two independent methods of forecasting based on judgment and
experience have been prepared each month for the past 10 months.
The forecasts and actual sales are as follows:
| Month | Sales | Forecast 1 | Forecast 2 |
| 1 | 830 | 790 | 760 |
| 2 | 845 | 800 | 795 |
| 3 | 795 | 805 | 820 |
| 4 | 825 | 815 | 830 |
| 5 | 770 | 780 | 795 |
| 6 | 835 | 790 | 796 |
| 7 | 785 | 765 | 800 |
| 8 | 835 | 785 | 835 |
| 9 | 805 | 800 | 810 |
| 10 | 855 | 820 | 795 |
c. Prepare a naive forecast for periods 2
through 11 using the given sales data. Compute each of the
following; (1) MSE, (2) MAD, (3) tracking signal at month 10, and
(4) 2s control limits. (Round your answers to 2
decimal places.)
| MSE | |
| MAD | |
| Tracking signal | |
| Control limits | 0 ± |
In: Advanced Math
You want to know if, on average, households have more cats or more dogs. You take an SRS of 8 households and find the data below:
| # of cats | # of dogs |
| 2 | 1 |
| 0 | 1 |
| 3 | 3 |
| 2 | 4 |
| 0 | 0 |
| 4 | 2 |
| 0 | 2 |
| 2 | 1 |
A) Determine the population(s) and parameter(s) being discussed.
B) Determine which tool will help us find what we need (one sample z test, one sample t test, two sample t test, one sample z interval, one sample t interval, two sample t interval).
C) Check if the conditions for this tool hold.
D) Whether or not the conditions hold, use the tool you choose in part B. Use C=95% for all confidence intervals and alpha=5% for all significance tests.
* Be sure that all methods end with a sentence describing the results *
In: Statistics and Probability
Western Airlines merged with a smaller airline recently. Every day since the merger, a random sample of 30 Western flights has been analyzed. A flight that takes off more than 10 minutes after its scheduled departure time is considered to be late; otherwise, it is not late. Western’s performance over the past 10 days is shown in the table below.
Day 1 2 3 4 5 6 7 8 9 10 # Late Flights 4 2 5 9 2 3 3 1 2 8
(I) What type of control chart would we use to monitor this process? ( Circle 1 ) (a) X-bar chart (b) R-chart (c) p-chart (d) c-chart
(II) And why?
(III) What are 2-sigma control limits for this process?
(IV) Is the process in control, after you plot and analyze the Control charts? Why/Why not?
In: Operations Management
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In: Accounting
Question #1.
The lateral surface area, S, of a cone is given by: ? = ?*SQRT(?^2 + ℎ^2) , where r is the radius of the base and h is the height. Determine the radius of a cone that has a surface area of 1200 m2 and a height of 20 m. Solve by using the bisection iteration method. Start with rl = 15 m, ru = 16 m and calculate the first four(4) iterations.
Question #2.
Determine the fourth (4) root of 200 by finding the numerical solution of the equation x4 - 200 = 0. Use False position method. Start with xl = 3, xu = 4 and carry out the first four(4) iterations.
I need a script using Matlab, Thank You.
In: Physics
The solution should be written in Java.
Your POSmain program should take three file names from command
line arguments. The first file contains a list of products and
their prices; the second and third files are lists of items in two
shopping carts of two customers. The POSmain program should first
read the price file, then read each of the cart files to load a
list of items in a shopping cart and store them in a ShoppingCart
objects. The price file may contain a variable number of products
and the cart files may contain a variable number of items.
POSmain then will create a CashRegister object by passing the price
list to it. The POSmain program then will use the CashRegister
object to scan items in a cart and print a receipt for each
shopping cart one by one. At last, POSmain will use the
CashRegister object to print a report for the day.
The students of CSIT111 and CSIT811 will print a different report
for the day, which requires different design of your CashRegister
class.
The output should be like this:-
One customer is checking out ...
========================================
Product Price Qty Subtotal
----------------------------------------
Bed $499.99 2 $999.98
Char $45.49 4 $181.96
TV $999.99 1 $999.99
Table $199.0 2 $398.0
-------------------------
Total $2579.93
========================================
One customer is checking out ...
========================================
Product Price Qty Subtotal
----------------------------------------
Bread $1.75 2 $3.5
Butter $2.84 1 $2.84
Ham $2.5 1 $2.5
Lettuce $1.0 1 $1.0
Milk $3.0 2 $6.0
Onions $0.54 3 $1.62
Tomato $0.76 5 $3.8
-------------------------
Total $21.26
========================================
Report for the day
========================================
Number of customers: 2
Total sale: $2601.19
List of products sold:
----------------------------------------
Product Qty
----------------------------------------
Bed 2
Bread 2
Butter 1
Char 4
Ham 1
Lettuce 1
Programming Fundamentals - 3/4 -
Milk 2
Onions 3
TV 1
Table 2
Tomato 5
In: Computer Science
Given the following sample information, test the hypothesis that the treatment means are equal at the 0.10 significance level:
| Treatment 1 | Treatment 2 | Treatment 3 |
| 3 | 9 | 6 |
| 2 | 6 | 3 |
| 5 | 5 | 5 |
| 1 | 6 | 5 |
| 3 | 8 | 5 |
| 1 | 5 | 4 |
| 4 | 1 | |
| 7 | 5 | |
| 6 | ||
| 4 | ||
a. State the null hypothesis and the alternative hypothesis.
H0 : μ1 click to select (=,>,<) μ2click to select (=, <, >) μ3 *please select correct multiple choice from brackets)
a. State the null hypothesis and the alternative hypothesis.
H0 : μ1
μ2
μ3
H1 : Treatment means
all the same.
b. What is the decision rule? (Round the final answer to 2 decimal places.)
Reject H0 if F > .
c. Compute SST, SSE, and SS total. (Round the final answers to 2 decimal places.)
SST =
SSE =
SS total =
d. Complete the ANOVA table. (Round the
SS, MS, and F values to 2 decimal places.)
| Source | SS | DF | MS | F | x | |
| Factor | x | |||||
| Error | x | x | ||||
| Total | x | x | x | |||
| * fill in all squares without x* | ||||||
e. State your decision regarding the null hypothesis.
Decision: click to select (Do not reject, Reject) H0. *select correct multiple choice*
f.Find the 95% confidence interval for the difference between treatment 2 and 3. (Round the final answers to 2 decimal places.)
95% confidence interval is: ____ ± _____ (fill in ___)
We can conclude that the treatments 2 and 3 are click to select (different, the same)
In: Statistics and Probability
Create a PLA, that implements the following functions: F1 = ∑(0, 3, 5, 9) F2 = ∑(1, 4, 8, 12) F3 = ∑(1, 5, 15) F4 = ∑(2, 5, 9, 13, 14)
In: Electrical Engineering
3. What is the primary difference between a mood and an emotion?
4. Affective states have two dimensions or components. Name each and explain what each is.
Dimension 1:
Explanation for 1:
Dimension 2:
In: Economics
PLEASE USE PYTHON CODE
7. Use Newton's method to find the polynomial that fits the following points:
x = -3, 2, -1, 3, 1
y = 0, 5, -4, 12, 0
In: Computer Science