Which of the following Python methods is used to perform hypothesis testing for a population mean when the population standard deviation is unknown?

a. uttest(dataframe, null hypothesis value)
b. ztest(dataframe, null hypothesis value)
c. prop_1samp_hypothesistest(dataframe, n, alternative hypothesis value)
d. ttest_1samp(dataframe, null hypothesis value)

Answer: Operating system

Explanation:

The components that will be required to upgrade as well to take full advantage of the new processor is the Operating system.

The operating system manages the software resources and the computer hardware, through the provision of common services for the computer programs. It simply supports the basic function of the computer like task scheduling

Answer:

•Determine your IP address.

•Verify physical connectivity to the network.

•Check that you have a logical connection to the network.

•Find out what path network traffic takes to get to its destination.

Translate from DNS names to IP addresses.

Answer:

DCUKE

Explanation:

Given that,

Code for JAVA = LCXC

To find,

Code for BASIC = ?

As we observe the pattern,

In "JAVA", every letter moved two-letter forward in their alphabetical order or we can say that every third alphabet of the given letter is used to make the code:

J + 2 = L

A + 2 = C

V + 2 = X

A + 2 = C

Similarly,

B + 2 = D

A + 2  = C

S + 2 = U

I + 2  = K

C + 2 = E

Thus, DCUKE is the code for BASIC.

The code for BASIC given the code for JAVA is; DCUKE

We are given the code for JAVA as LCXC

From that code for "JAVA", we see that every letter is moved forward two letters in their alphabetical order. This means

Similarly for BASIC;

Thus, finally the code for BASIC is DCUKE

Read more about JAVA at; https://brainly.com/question/18554491

Answer:

The function in Python is as follows:

def reverse(inputstr):  

   outputstr = ""

   for i in inputstr:

       outputstr = i + outputstr

   return outputstr

Explanation:

This defines the function

def reverse(inputstr):

This initializes the output string

   outputstr = ""

This iterates through the input string

   for i in inputstr:

This generates the output string by reversing the input string

       outputstr = i + outputstr

This returns the reversed string

   return outputstr

Answer:

An example of file system performance optimization is Caching - i.e. keep in memory a collection of blocks that logically belong on the disk, for performance reasons.

Explanation:

Caching - i.e. keep in memory a collection of blocks that logically belong on the disk, for performance reasons.

The ultimate frequent method employed to decrease the duration of disk elucidated as a collection of books i.e similar kind that is preserved in invisible area.

Answer:

Training data is used to fine-tune the algorithm’s parameters and evaluate how good the model is

Explanation:

The statement about datasets used in Machine Learning that is NOT true is "Training data is used to fine-tune algorithm’s parameters and evaluate how good the model is."

This is based on the fact that a Training dataset is a process in which a dataset model is trained for corresponding it essentially to fit the parameters.

Also, Testing the dataset is a process of examining the performance of the dataset. This refers to hidden data for which predictions are determined.

And Validation of dataset is a process in which results are verified to perfect the algorithm's details or parameters

Answer:

Option A, Font Dialog Box

Explanation:

In order to make changes in the text formatting, the font setting in the dialog box can be used on the Ribbon's Home tab.

From the font settings in Word 2016, one can change the following change font color, size, style etc.

Hence, option A is correct

Answer:

2

Explanation:

evaluate the formula for n=2, then it says:

a₂ = 2a₁ - 3·2

So

a₂ = 2·4 - 3·2 = 8-6

a₂ = 2

Answer:

C

Explanation:

The statements about the relationship between hardware and software that is true is: D. Software consists of instructions that tell the hardware what to do.

A hardware can be defined as the physical components of an information technology (IT) system that can be seen and touched such as:

Conversely, a software refer to a set of executable codes (instructions) that is primarily used to instruct a computer hardware on how it should process data, perform a specific task or solve a particular problem.

In conclusion, a software consist of a set of executable codes (instructions) that tell a computer hardware what to do.

Read more on hardware here: https://brainly.com/question/959479

Answer:

Following are the code to the given question:

#include<iostream>//header file

#include<iomanip>//header file 

using namespace std;

int main()//main method

{

  double temperatures[7][2];//defining a double array temperatures

  double lowAvg=0, highAvg=0;//defining a double variable

  for(int i = 0;i<7;i++)//defining loop to input the value

  {

     cout<<"Enter day "<<(i+1)<<" highest temperatures: ";//print message  

     cin>>temperatures[i][0];//input highest temperatures value

     cout<<"Enter day "<<(i+1)<<" lowest temperatures: ";//print message  

     cin>>temperatures[i][1];//input lowest temperatures value

  }  

  cout << fixed << setprecision(1);//using the setprecision method  

   for(int i = 0;i<7;i++)//defining loop to calculating the Average of the  

  {

     highAvg += temperatures[i][0];//holding highest value

     lowAvg += temperatures[i][1];//holding lowAvg value

  }

  cout<<"Average high temperature = "<<highAvg/7<<endl;//calculate amd print highest temperature Average

  cout<<"Average low temperature = "<<lowAvg/7<<endl;//calculate amd print lowest temperature Average

  return 0;

}

Output:

Please find the attached file.

Explanation:

Answer:

Mobile app creation platforms are available that reduce the need to code.

Explanation:

Simple app creation softwares and tools are all over the place for mobile app creation. To create a mobile app, no coding knowledge or experience is needed unlike desktops apps that requires the knowledge of some coding languages like python, JavaScript etc.

The availability of these softwares and platforms have made mobile apps creation easy.

Answer:

To qualify as a primary key, it is the data within each column that must be unique, not simply the column names themselves. At the same time, no value in the columns can be blank or NULL. A primary key, therefore, is used to ensure the data in a specific column is unique.

Explanation:

hope it's help

Answer:

Outlook Web App

Explanation:

For Brody to accomplish this he will need to go to the Outlook Web App. Here, he will need to navigate to the top of the application where the toolbar is located. Then he will need to click on File, then Tools, and finally Mailbox Cleanup. This will give him access to all of the cleanup tools that the Outlook Mailbox has for managing all of his electronic mail as well as adjusting the quota set for his mailbox.

Answer:

A. Backstage view indox

Explanation:

Answer:

I believe the answer would be D. Data Reporting!

hope this helps! <3

Answer:

Correct Answer D:- DATA Reporting.

Explanation:

Data reporting is the collection and submission of data that leads to accurate ground-based analysis incorrect data reporting can lead to extremely informed decision-making using wrong evidence. Data reporting is not only about information but also about data collection.

The reporting of data may be an unbelievably difficult task. In order to achieve the job of counting every resident of a country, census bureaus can hire even hundreds of thousands of workers.

Data reporting is a step that translates raw information into information. It is not the data analysis that transforms data and information into insights. If data is not reported, the problem is known as underreporting the opposite is wrong.

Explanation:

a magazine cause it helps put out commercial

Answer:

its either sort or file menu

Answer:

Health and Safety using ICT Tools.

...

Some of the long-term health effects are:

Headaches and tiredness. Using the mobile phone for hours can be very stressful and may lead to mild or severe headaches.

Creates joint pain. ...

Mobile phone battery explosion. ...

Induced ringing!

Answer:

ICT tools for health and safety. Find common health issues related to computer usage and other ICT tools.

Explanation:

Use of ICT instruments

ICT tools are computer-based equipment used for processing and communicating information and technology. There are certain ICT tools;

- TV.

- System of Public Address

- Radio

- Mobile Phone

- Computer

What are the adverse consequences of long-term television exposure?

You don't have eyes for hours to stare at the TV.

Taking hours on the TV can be dangerous and dangerous for the eye.

If you starve continuously, your eye will get overworked and this will cause an irritation of the eye, such as dry eye, red, itchy, and watery eyes, fatigue, eyelid weight or forehead, as well as eye concentration.

Certain long-term effects on health are:

1. Tiredness and headaches.

2. Make pain joint.

3. Battery explosion mobile phone.

4. Ringing induced! In ears.

Answer: Its............ A Chromebook type of Chromebook...??

Explanation:

Ion know I aint a geek, geezer -_- (Thats a lie)

Answer: Send status report when I complete an assigned task

Explanation:

In order to be aware of their progress, the option to choose is the "Send status report when I complete an assigned task".

To do this click on options on the tools menu, then click on task options. Then, after the keep updated copies of the assigned tasks on my task list has been selected in the check box, one will then select "Send status reports when the assigned tasks are completed".

Answer:

true

Explanation:

the derivative of lnx is 1/x and 1/x is and odd function because x^-1 is raise to a negative odd number

Answer:

jidjdjdjdkdjdjkdjdhdjurjrhrjdjdjdjdjddjjd

Explanation:

kkfjfjfjfjfjfjfjfjfjjfjfjffjjfjfjfjfjf sorry po

Available options are:

A. Technical champions

B. Engaged filmmakers

C. Business partners

D. Compliance champions

Answer:

Technical champions

Explanation:

Given that a "Technical Champion" is someone whose responsibility is to introduce and perform the role of enabling the use of technology, development of skills across the organization, and strengthen communication between Information Technology and the staff or employees.

Hence, in this case, considering the job descriptions described in the question above, these individuals would best be described as TECHNICAL CHAMPIONS

Solution :

The function code is :

function newPriceTable = UpdatePriceTable(origPriceTable,changePrice, colNum)

newPriceTable = origPriceTable:

newpriceTable(:,colNum) = newPriceTable(:,colNum)+changePrice;

end

UpdatePriceTable ([19.99, 9.99; 14.99, 8.99;], [-1.00, -1.50] , 1)

ans = 18.9900      9.9900

         13.4900      8.9900

The question is incomplete. The complete question is :

Holly the Hacker has a list of 100,000 common passwords. She wants to use this list to break into UNIX-like systems that use a password file with lines consisting of:

The user's ID in plaintext.

10 bits of randomly chosen "salt," in plaintext.

The user's password, concatenated with the salt, and then encrypted.

There are very many such systems around the world, and Holly plans to steal the password files from as many as she can. The average system has 50 users in its password file.

Holly wants to create a master list of the encrypted versions of all the 100,000 passwords on her list, encrypted with all possible salt values. To create this master list, approximately how many encryptions of a password-concatenated-with-salt would Holly have to perform?

A. 2 million

B. 5 million

C. 100 million

D. 1 million

Solution :

It is given that the hacker, Holly wants break into the  UNIX-like systems using 100,000 common passwords that she has on her list. The system has at an average of 50 users in the password files.

Therefore, to create a master list, Holly have to perform about 50 x 100,000 = 5,000,000 encryptions for the password concatenated-with-salt.

Thus the correct option is option (B).  5 million

Answer:

POP

Explanation:

The application layer protocol that is been used here is POP, given that you issued a transmission to the socket on you LAN: 10.1.145:110.  and you use a standard port designation

Reason:

110 ( port number ) represents a POP3 process that is always used in a TCP/IP network , and the socket address started with an IP address as well. hence we can say that the application layer protocol is POP

Answer:

There are two remaining gates of the primary electronics logic gates: XOR, which stands for Exclusive OR, and XNOR, which stands for Exclusive NOR. In an XOR gate, the output is HIGH if one, and only one, of the inputs is HIGH. ... An XNOR gate is an XOR gate whose output is inverted.

Explanation:

There are two remaining gates of the primary electronics logic gates: XOR, which stands for Exclusive OR, and XNOR, which stands for Exclusive NOR. In an XOR gate, the output is HIGH if one, and only one, of the inputs is HIGH. ... An XNOR gate is an XOR gate whose output is inverted..

Answer:

Wi-fi refers to a network that is based on the 802.11 standard.

Answer:

It is based on the 802.11 standard

Explanation:

Answer:

The modified program in Python is as follows:

import math

paint_colors = {'red': 35,'blue': 25,'green': 23}

wall_height = int(input('Enter wall height (feet):\n'))

wall_width = int(input('Enter wall width (feet):\n'))

area = wall_height*wall_width

print('Wall area:',area,'square feet')

paint_needed = area/350.0

print('Paint needed: {:.2f} gallons'.format(paint_needed))

print('Cans needed:',round(paint_needed),'can(s)')

color = input("Choose a color to paint the wall: ")

print("Cost of purchasing", color, "paint: $",paint_colors[color])

Explanation:

The italicized are given from the question [unchanged]

import math

paint_colors = {'red': 35,'blue': 25,'green': 23}

wall_height = int(input('Enter wall height (feet):\n'))

This gets input for width

wall_width = int(input('Enter wall width (feet):\n'))

Calculate the wall area

area = wall_height*wall_width

Print the calculated wall area

print('Wall area:',area,'square feet')

Calculate the amount of paint needed

paint_needed = area/350.0

Print the amount of paint needed to 2 decimal places

print('Paint needed: {:.2f} gallons'.format(paint_needed))

Print the amount of can needed to nearest integer

print('Cans needed:',round(paint_needed),'can(s)')

Prompt user for color of paint [here, we assume the user input is correct]

color = input("Choose a color to paint the wall: ")

Prints the corresponding amount for the color

print("Cost of purchasing", color, "paint: $",paint_colors[color])

Answer:

Explanation:

The following is written in Java. It creates a while loop that requests price from the user and goes adjusting the quantity and subtotal as more prices are added. If 0 is entered it breaks the loop and outputs the quantity, subtotal, tax, and grand total to the user.

import java.util.Scanner;

class Brainly {

   public static void main(String[] args) {

       Scanner in = new Scanner(System.in);

       int quantity = 0;

       double subtotal = 0;

       double tax, grandTotal;

       while (true) {

           System.out.println("Enter a price: ");

           double price = in.nextDouble();

           if (price == 0) {

               break;

           } else if (price > 0) {

               quantity += 1;

               subtotal += price;

           }

       }

       tax = subtotal * 0.075;

       grandTotal = subtotal + tax;

       System.out.println("Quantity: $" + quantity);

       System.out.println("Subtotal: $" + subtotal);

       System.out.println("Tax: $" + tax);

       System.out.println("GrandTotal: $" + grandTotal);

   }

}

Answer:

Think of a firewall as your own personal security guard. The firewall will block unapproved websites from talking to your computer and will stop your computer from talking to unapproved/unnecessary websites. Hope this helps!

Explanation:

Answer:

d. RAID 6

Explanation:

RAID is a data storage technology that combines multiple physical disk drive components into a single logical unit. The functions of RAID is to provide performance and redundancy.

RAID 0 provides data stripping but it does not offer data stripping.

RAID 1 increases performance to about 2x but it limits the disk capacity to about 50%

RAID 5 provides redundancy and increased perfomance but it is limited to small disk drive.

RAID 6 also provides redundancy but it slows performance

RAID 10 increases performance and data protection.

RAID 6 is the best drive that offers redundancy over performance.