Full from of Computer
: )​

Answer:

(a) [tex]\bar x_1 = 43.7[/tex]     [tex]\bar x_2 = 30.25[/tex]

(b) [tex]\sigma_1 = 16.93[/tex]    [tex]\sigma_2 = 7.14[/tex]

(c) Smoking increases the time to fall asleep

Explanation:

Solving (a): The sample mean of each group

Mean is calculated as:

[tex]\bar x = \frac{\sum x}{n}[/tex]

So, we have:

Smokers

[tex]n_1= 12[/tex] and

[tex]\bar x_1 = \frac{69.3 +56.0+ 22.1 +47.6+ 53.2+ 48.1+ 52.7 +34.4+ 60.2 +43.8 +23.2 +13.8}{12}[/tex]

[tex]\bar x_1 = \frac{524.4}{12}[/tex]

[tex]\bar x_1 = 43.7[/tex]

Non Smokers

[tex]n_2 = 15[/tex] and

[tex]\bar x = \frac{28.6 +25.1 +26.4 +34.9 +28.8 +28.4 +38.5 +30.2 +30.6 +31.8 +41.6 +21.1 +36.0 +37.9 +13.9}{15}[/tex]

[tex]\bar x_2 = \frac{453.8}{15}[/tex]

[tex]\bar x_2 = 30.25[/tex]

Solving (b): The standard deviation of each group

This is calculated as:

[tex]\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n-1}}[/tex]

For smokers

[tex]n_1= 12[/tex]

So:

[tex]\sigma_1 = \sqrt{\frac{(69.3 -43.7)^2+(56.0-43.7)^2+..........+(13.8-43.7)^2}{12-1}}[/tex]

[tex]\sigma_1 = \sqrt{\frac{3152.04}{11}}[/tex]

[tex]\sigma_1 = \sqrt{286.5491}[/tex]

[tex]\sigma_1 = 16.93[/tex]

For non-smokers

[tex]n_2 = 15[/tex]

So:

[tex]\sigma_2 = \sqrt{\frac{(28.6 -30.25)^2+(25.1 -30.25)^2+..........+(13.9 -30.25)^2}{15-1}}[/tex]

[tex]\sigma_2 = \sqrt{\frac{713.2575}{14}}[/tex]

[tex]\sigma_2 = \sqrt{50.9469}[/tex]

[tex]\sigma_2 = 7.14[/tex]

Solving (c): Impact of smoking on time to sleep

In (b), we have:

[tex]\sigma_1 = 16.93[/tex] --- smokers

[tex]\sigma_2 = 7.14[/tex] --- non-smokers

Smokers have larger standard deviation (i.e. large variability) than non-smokers. This means that smokers require more time to fall asleep.

choose the correct option:

1) using

2) is

3) use

4) to eat

5) use

Answer:

1. Template

2. Name of the website

3. Signature of the instructor

Answer:

The company will be able to provide human representative for any incoming call

Explanation:

The upgrade of a system is meant to resolve identified issues in an initial system and given that the available human representative is usually less than the number of incoming call at a given time, due to a constant drive for a larger customer base, we have;

The upgraded system will provide technologies such that human representative will not be required for some inquiries, customers will listen to mainly relevant information with regards to their issues and customers will be properly directed to the correct department that are concerned with their current issue

Therefore, the LEAST likely goal of the upgraded system from among the options and therefore the least likely to be provided by the upgrade is the company will be able to provide human representative for any incoming call

Answer:

Simplifies creating a complex program

Explanation:

Solution :

Digital recording may be defined as the preservation of an audio or some visual signals like the series of a binary numbers which can be stored on a magnetic tape or on an optical disc or some other digital storage media.

Some of the best practices for doing digital recording are :

1. We should always take permission from those who are being recorded. It is not right to shoot others without their permission. It is against the right to privacy.

2. We should record audio at about 44.1 kHz/16 bit in an uncompressed wave format.

3. A High quality MP3 (192 kbps or higher) is often accepted due to the limitations of a recorder or for a storage space.

The MP3 recordings are considered as the best option for certain recorders  and when the storage space is severely limited. It produces a good quality recording.

Answer:

Versatility refers to the capability of a computer to perform different kinds of works with same accuracy and efficiency.

Explanation:

thank me later

Versatility refers to the effort or ability of a computer to carry out different kinds of works and it is done that is done on the same level of accuracy and efficiency.

Computer is known to be a machine that is said to be versatile machine as it is made up of a lot of field and also involves in Multi-tasking.

Therefore, Versatility refers to the effort or ability of a computer to carry out different kinds of works and it is done that is done on the same level of accuracy and efficiency.

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#SPJ2

Answer:

wear a mask use hand sanitizer dont get in contact with anyone between 6 feet

Explanation:

Answer:

2. Insert

3. Links

4. Add

6. Advanced

Explanation:

HTML is an acronym for hypertext markup language and it is a standard programming language which is used for designing, developing and creating web pages.

A website refers to the collective name used to describe series of web pages linked together with the same domain name.

On the other hand, a webpage is the individual HTML document (single page) that makes up a website with a unique uniform resource locator (URL).

A bookmark can be defined as a placeholder or saved shortcut for a webpage and for future reference. Thus, it avails an end user the ability to quickly access a bookmarked webpage by automatically directing the web browser to the webpage.

Basically, the steps for creating a bookmark are;

1. The insertion point of the webpage should be placed at the point where the bookmark should appear.

2. Click the "INSERT" tab.

3. In the "LINKS" group, click "Bookmark"

4. When a dialog box opens, the bookmark should be named with a specific title, and then click "ADD"

5. To see bookmarks within the HTML document, you should go to Backstage view and click on "Options"

6. In ADVANCED, select Show Bookmarks to have them appear as a locked cursor within the HTML document.

Answer: See explanation

Explanation:

During the, (software design phase), developmentt teams transform the requirements into a software application design.

During the (software development phase), the software design is implemented by developers in code.

In the (software evaluation phase), software is evaluated for quality.

Any issues with the software are logged as (bugs) to be resolved by developers.

Software that is maintained by developers is said to be (supported).

Answer:

1) 2

2) 1

3) 2

4) 2

5) 3

Explanation: just did it

Starting something

Possibly turning it off

Making something work

Fixing the Start Button

Beginning something

The right answer is option 4: 2

Explanation:

Lists are used in Python to store elements of same or different data types.

Different functions are used in Python on List. One of them is count.

Count is used to count how many times a specific value occurs in a list.

The syntax for count is:

listname.count(value)

In the given code,

The output will be 2

Hence,

The right answer is option 4: 2

Answer:

1. Spreadsheet software.

2. Word processor.

3. Database software.

4. Multimedia software.

Explanation:

A software can be defined as a set of executable instructions (codes) or collection of data that is used typically to instruct a computer on how to perform a specific task and solve a particular problem.

Simply stated, it's a computer program or application that comprises of sets of code for performing specific tasks on the system.

Basically, the various type of softwares used on computers to perform specific functions include the following;

1. Spreadsheet software: it can be used to create tables with embedded calculations. A spreadsheet can be defined as a file or document which comprises of cells in a tabulated format (rows and columns) typically used for formatting, arranging, analyzing, storing, calculating and sorting data on computer systems.

2. Word processor: it can be used to format or edit .doc files. Some examples of word processors are Notepad, Microsoft Word, Sublime text, etc.

3. Database software: it can be used to store data in ordered form. Thus, it allows computer users to efficiently retrieve and manage their data with an appropriate level of security. These records are stored and communicated to other data user when required or needed.

4. Multimedia software: it can play .mpg and .mp3 files. A multimedia software refers to a software that is designed and developed to accept, utilize and combine various file formats such as audio, video, text, animation effects, etc.

Answer:

C."How to Become a Dentist." Occupational Outlook Handbook. Bureau of Labor Statistics and US Department of Labor, 29 March 2012. Web. 1 May 2013.

Explanation:

When citing an online publication without a known author, the title of the article is first stated and encapsulated in italics. This is then followed by the name of the website or book. The organization responsible for the write-up is indicated. A comma separates the name of the organization and the date when the article was written. 'Web' is written to show that the material was obtained online. Finally, the date that tells when the article was retrieved is noted.

This guideline applies to both the Modern Language Association and the American Psychological Association citation styles.

Answer:

Identify the correct way to cite the Occupational Outlook Handbook's "How to Become a Dentist" web page. awser:C Explanation: How to Become a Dentist." Occupational Outlook Handbook. Bureau of Labor Statistics and US Department of Labor, 29 March 2012. Web. 1 May 2013.

Answer:

efeiueur eiuube erferve

Explanation:

Answer:

La energia no renovable proviene de fuentes que se agotaran o no se repondran durante miles o incluso millones de años.

Los combustibles fósiles se queman para generar energía y electricidad. Por ejemplo, carbón.

Answer:

The program in Python is as follows:

myStr = input()

pos = int(input())

chrr = input()

myList=[]

myList[:0]=myStr

myList[pos] = chrr

myStr =""

for i in myList:

   myStr+=i

print(myStr)

Explanation:

This gets input for the string

myStr = input()

This gets input for the character position

pos = int(input())

This gets input for the incoming character

chrr = input()

Create an empty list

myList=[]

Convert the string to a list

myList[:0]=myStr

Replace the character

myList[pos] = chrr

Empty the string

myStr =""

Get the new string

for i in myList:

   myStr+=i

Print the new string

print(myStr)

Following are the C++ program to replace the first index value of the string.

Program Explanation:

Program:

#include <iostream>//header file

#include <string>//header file

using namespace std;

int main() //main method

{

 string Sval;//defining string variable

 int Spos;//defining integer variable

 char Subchar;//defining char variable

 cin>>Sval>>Spos>> Schar;//input value

 Sval.at(Spos)  =  Subchar; //using string variable that replaces the first index value with the character value

 cout << Sval << endl;//printing the replaced value

 return 0;

}

Output:

Please find the attached file.

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Answer:

expanding markets in Asia, new accessories that will attract more players, an expanding market on mobile phones

Explanation:

Answer:

what should be basically be done in this question?

Answer:

In order to reduce the risk of accidents on the roads.

Explanation:

The special equipment is used when  testing eyesight for a driver's license in order to reduce the risk of accidents on the roads. Good eyesight is very important for good and safe driving so to find out the eyesight of the driver, the license officer used special equipment in order to check driver's eyes. If the eyesight is good, the officer provide license to the person otherwise not so that no accidents happen on the road.

Answer:

Shortcut

Explanation:

A file can be defined as a computer resource that avails end users the ability to store or record data as a single unit on a computer storage device.

Generally, all files are identified by a name, icon, size, and type (format) such as audio, image, video, document, system, text, etc.

Furthermore, files are organized or arranged in directories. These directories are paths that describes the location wherein a file is stored on a computer system.

A software can be defined as a set of executable instructions (codes) or collection of data that is used typically to instruct a computer on how to perform a specific task and solve a particular problem. Thus, it's a computer program or application that comprises of sets of code for performing specific tasks on the system.

In Computer science, it's possible to create a shortcut in several directories (locations) on a computer, so as to reference a file, folder or software application and serve as an executable link.

Hence, a shortcut is an icon that does not directly represent a file, folder or application but serves as a link to it.

Additionally, deleting the shortcut of a data file, folder or software application would not permanently delete or uninstall the main data file respectively.

Answer:

algorithm.

Explanation:

An algorithm can be defined as a standard formula or procedures which comprises of set of finite steps or instructions for solving a problem on a computer. The time complexity is a measure of the amount of time required by an algorithm to run till its completion of the task with respect to the length of the input.

Furthermore, the processing symbols and their functions used in developing an algorithm are oval (start or stop), diamond (decision-making), circle (on-page connector), parallelogram (input and output), rectangle (calculation), arrow (flow or direction) and pentagon (off-page connector).

Some of the characteristics of an algorithm include the following;

I. An algorithm can be written using pseudocode. A pseudocode refers to the description of the steps contained in an algorithm using a plain or natural language.

II. An algorithm can be visualized using flowcharts. A flowchart can be defined as a graphical representation of an algorithm for a process or workflow.

In conclusion, an algorithm is a sequence of precise instructions which result in a solution​ for solving problems using a computer system.

Answer:

Business communications tools are widely used and the world is becoming increasingly digital so not having those skills will hinder you.

Explanation:

Many jobs require knowledge of Microsoft tools as a qualification. By not having that expertise, I will be viewed as less qualified for a position and may be passed up for job. In corporate America, presentations are a staple and Microsoft PowerPoint is the primary software. If I deliver a poor presentation due to inexperience, I will make myself look bad and as a result get a bad quarterly review and possibly stunted any future promotions. On the flipside, as a business owner Excel is a handy tool for tracking expenses. Very customizable, quick and easy to understand.

Answer:

You would use a twig first :)

Explanation:

Answer:

The glowing embers from the crackling campfire lit up the nighttime sky.

Explanation:

Answer:

Reorder terms.

y=52x−1

Cancel the common factor of 22.Factor 22 out of −2-2.

y−4=5x2+52⋅(2(−1))y-4=5x2+52⋅(2(-1))

Cancel the common factor.

y−4=5x2+52⋅(2⋅−1)y-4=5x2+52⋅(2⋅-1)

Rewrite the expression.

y−4=5x2+5⋅−1y-4=5x2+5⋅-1

Multiply 55 by −1-1.

y−4=5x2−5

Answer:

Hello There!!

Explanation:

I believe the answer is O A. a portfolio with some case studies of her graphic design work.

hope this helps,have a great day!!

~Pinky~

Answer:

there are 2 types of application software

Answer:

because she keeps using a metal detector.

Answer:

to stop it from breaking

Explanation:

Answer:

Emails designed to trick users into sharing private information.

Explanation:

if that is a multiple choice question and the other sentences is the answer choices.