Statistical estimation

A metalworking company has 192 operators. In a random sample of 50 of them, the average number of overtime hours worked in a week and their standard deviation was 9.6 and 6.2 hours respectively.

a.In order to program the economic resources for all the personnel of operators, the personnel department decides: To estimate with a confidence of 96% the average number of overtime hours worked by each operator during a week.
b. Estimate with a 99% confidence the total number of overtime hours worked by the company's operators for a week.

Suppose the electric field between the electric plates in the mass spectrometer of the figure 20-39 in the textbook is 2.69×104V/m and the magnetic fields B=B′=0.70T. The source contains carbon isotopes of mass numbers 12, 13, and 14 from a long-dead piece of a tree. (To estimate atomic masses, multiply by 1.67 ×10−27kg.)

A - How far apart are the lines formed by the singly charged ions of mass numbers 12 and 13 on the photographic film?

Express your answer using two significant figures.

r12 and 13 = ? m

B- How far apart are the lines formed by the singly charged ions of mass numbers 13 and 14 on the photographic film?

Express your answer using two significant figures.

r13 and 14 = ? m

C- What if the ions were doubly charged?

Express your answer using two significant figures. Enter your answers numerically separated by a comma.

r12 and 13, r13 and 14 = ? m

6. Pieces produced per cycle: 8
   
   Average measured cycle time: 8.36 min
   Average measured effort time per cycle: 4.62 min Average rapid traverse time: 0.08 min
   Average cutting time power feed: 3.66 min Performance rating: 115 percent
   Allowance (machine time): 10 percent Allowance (effort time): 15 percent

The operator works on the job a full 8-h day and produces 380 pieces. How many stan-

dard hours does the operator earn? What is the operator’s efficiency for the 8-h day?

Some information about youTube.

Summarize to an Infographic. Focus on numbers, statistics, success stories, advantages, benefits, etc for youTube.

The charging min value is zero and max value is 100. When the charger is not plugged, the robot is in discharging state and the battery decreases. When charger is attached, the state is changed to charging and the value increase. Once it reaches the max
limit, the state changes to battery full.

Q) Write boundary value analysis for battery level.

Q) Write test cases for battery level for both valid and invalid.

1. Servlet program to find the information about an account holder at a bank.
( Bank name= your name )
（I'm using netbeans with glassfish, lecturer mentioned not to use jsp, mostly use CSS, Javascript, html, xml)
• Case:
a) Have username and password authentication
b) Display his Account balance to be RM10000,
c) Show different functionalities of a bank account (Deposit, Withdrawal, Print)
d) For every transaction make sure make use of his account balance.
e) Perform the functionalities(Deposit, Withdraw and print) until the user selects
to stop.

Manufacturing Organization: Caterpillar

Question: Differentiate at least two or three key elements for each of the four primary forecasting techniques and how they apply to your chosen organization.

– Consider an XYZ Hypermarket in the Sultanate of Oman. The hypermarket has got a lot of branches spread across different Wilayats in the country. As a database administrator, which client server architecture will you be preferring for this hypermarket and why. Support you answer with valid in-text citations and references.

Requirement 2:

The company has just hired a new marketing manager who insists that unit sales can be dramatically increased by dropping the selling price from $8 to $7. The marketing manager would like to use the following projections in the budget:

a. What are the total expected cash collections for the year under this revised budget?

b. What is the total required production for the year under this revised budget?

c. What is the total cost of raw materials to be purchased for the year under this revised budget?

d. What are the total expected cash disbursements for raw materials for the year under this revised budget?

1. In order to implement a DNS amplification attack, the attacker must trigger the creation of a sufficiently large volume of DNS response packets from the intermediary to exceed the capacity of the link to the target organization. Consider an attack where the DNS response packets are 1000 bytes in size (ignoring framing overhead).

   1. How many of these packets per second must the attacker trigger to flood a target organization using a 30-Mbps link? A 100-Mbps link? Or a 1-Gbps link?

   2. If the DNS request packet to the intermediary is 60 bytes in size, how much bandwidth does the attacker consume to send the necessary rate of DNS request packets for each of these three cases?

An individual buys 10 raffle tickets in hopes of winning one of 15 prizes to be given away by drawing tickets without replacement. The total number of raffle tickets sold is 168. Lt X be the number of prizes won by the individual.

A) Find the probability the individual wins at least one prize

B) Calculate the expected value E(X) accurate to 4 decimal places

C) Calculate the standard deviation SD(X) accurate to 4 decimal places

Q17. Fill in the blanks:

Consider the operands to be signed words (16 bit)

a) mov ax, - 48 cwd mov bx , 5 idiv bx ; ax = _______ , dx = _____ (provide answers in decimal) Consider the operands to be signed words (16 bit)

b) mov ax , -1 mov bx , -1 imul bx ; ax = _________H, dx =__________H (provide answer in Hex) Consider the operands to be signed words

c) mov ax , -1 mov dx , 2 imul dx ; ax = _______H ,dx = ________H(provide answer in Hex) Consider the operands to be signed byte (8 bit)

d) mov al, -48 cbw mov bl, 5 idiv bl ; al = _____, ah = _______ (provide answers in decimal) 5

Q18. Fill in the values as the following code fragment is executed:

a) count DB 9A H ; count is Byte variable initialized to 9A H num DB BC H ; num is a Byte variable initialized to BCH mov ah, count mov al, num ; ax = _______________H

b) mov ax, 1234H mov ax, ‘A’ ; ax = ________________H (Hint: ASCII code of ‘A’ = 65 in decimal)

c ) mov dx , 0087H mov ax, 6000H mov bx, 100H div bx ; ax = ________________H

d) mov ax, 1237H sub al, 38H ; ax = ________________H

Explain company analysis techniques that precede strategy selection to determine the appropriate organizational structure for its strategic plans. Outline the key issues behind the selection of organizational structure. Explain various international structures and types of work teams. Companies rarely remain static and thrive; describe a scenario in which a company might need to modify its strategy and, by extension, its structure.

Provide an example of a real-time application and, to the best of your knowledge, discuss its following aspects:

What would be the involved periodic tasks? What would be their release time (or release-time jitter)?

What would be the aperiodic tasks in the application? What would be their release time, i.e., events that would trigger the aperiodic tasks?

What would be the sporadic tasks in the application?

What would be their release time, i.e., events that would trigger the aperiodic tasks?

There's an array named score, 90, 98, 92, 88, 100, 80 are the elements in this array.

Please write a Java program to declare and sort this array (use selection sort).