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otez555 [7]
3 years ago
7

A researcher is interested in whether working memory is influenced by lack of sleep. The researcher administered a measure of wo

rking memory to a group of subjects at 8 A.M. on Day 1 of the study and then again at 8 A.M. on Day 2 of the study, after keeping the subjects awake the entire night. What kind of statistical test should be conducted on these data?
Computers and Technology
1 answer:
ale4655 [162]3 years ago
5 0

Answer:

Dependent sample t-test

Explanation:

The Dependent sample t-test compares the mean score of measurements in one group to that of another other group. It mainly used when analyzing comparable sample units as it pairs repeatable observations within a time frame.

For example, a researcher administered a measure of working memory to a group of subjects at 8am on Day 1 of the study and then again at 8am on Day 2 of the study, after keeping the subjects awake the entire night.

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How can you create an illusion of spatial depth in a two-dimensional design?
astraxan [27]

Answer:

Using three or more vanishing points within a work to create the illusion of space on a two-dimensional surface.

Explanation:

6 0
3 years ago
In symmetric key cryptosystem, assume that Alice and Bob have set up a common key Kab. This key is only known to Alice and Bob.
azamat

Answer:

yes

Explanation:

If it is guranteed the key is only known to Alice and Bob and there is no risk of man in the middle attack or channel spoofing so we can achieve data origin authentication

4 0
3 years ago
Classes cannot:
dexar [7]

Classes cannot Initialize data members in the class definition.

B) Initialize data members in the class definition

<u>Explanation:</u>

Class is defined by end user data type where it can handle multiple data type and referred to other classes also. Class is also called as data structure object or object class.

Due to class methods total programming language coding style is changes. For example employee of an organization should hold his or her employee number, address detail, spouse details, salary details

Where in old style programming language we need to declare separate variable to hold the data types, where we can define employee as class which can hold employee number, address fields, and again define salary details as other class and add employee->employee number where key connect between to class which is called derived class.

5 0
3 years ago
(1) Prompt the user to enter a string of their choosing. Output the string.
barxatty [35]

Answer:

See solution below

See comments for explanations

Explanation:

import java.util.*;

class Main {

 public static void main(String[] args) {

   //PrompT the User to enter a String

   System.out.println("Enter a sentence or phrase: ");

   //Receiving the string entered with the Scanner Object

   Scanner input = new Scanner (System.in);

   String string_input = input.nextLine();

   //Print out string entered by user

   System.out.println("You entered: "+string_input);

   //Call the first method (GetNumOfCharacters)

   System.out.println("Number of characters: "+ GetNumOfCharacters(string_input));

   //Call the second method (OutputWithoutWhitespace)

   System.out.println("String with no whitespace: "+OutputWithoutWhitespace(string_input));

   }

 //Create the method GetNumOfCharacters

   public static int GetNumOfCharacters (String word) {

   //Variable to hold number of characters

   int noOfCharactersCount = 0;

   //Use a for loop to iterate the entire string

   for(int i = 0; i< word.length(); i++){

     //Increase th number of characters each time

     noOfCharactersCount++;

   }

   return noOfCharactersCount;

 }

 //Creating the OutputWithoutWhitespace() method

 //This method will remove all tabs and spaces from the original string

 public static String OutputWithoutWhitespace(String word){

   //Use the replaceAll all method of strings to replace all whitespaces

   String stringWithoutWhiteSpace = word.replaceAll(" ","");

   return stringWithoutWhiteSpace;

 }

}

6 0
3 years ago
Weber believed that there is an inevitable destructive quality to which one of the four types of action?
weqwewe [10]

Answer:

instrumental-rational                                        

Explanation:

  • A sociologist Max Weber interpreted the effects of Industrial Revolution on social actions. He described the four types of social actions:

                     Traditional Social Action

                      Affective/Affectional Social Action

                     Value Rational Social Action

                  Instrumental-Rational  Social Action

  • Instrumental-rational means to pursue most efficient means to achieve a specific goal.
  • The goals of the actions are also used as a way of achieving certain objectives.
  • So instrumental rational means doing anything it takes to reach a certain goal that does not take into account the consequences of the actions taken to achieve this goal.  
  • For example an organization's goal is to make maximize profit so it will use most effective and economical means to achieve this goal. For example by decreasing workers not considering the affects on the workers of this action.
  • Another example is of a person who wants to gain money. He might rob others or sell drugs etc to get money. A student whose goal is to pass an exam in order to get a degree will give his time to study and might cheat in exam to pass the test.
  • In short any actions can be taken which leads to the achievement of  a certain goal.
  • According to Weber instrumental rationality is destructive because rather than pursuing means and making decisions by taking moral values into consideration, the basic focus is to achieve a goal and make decisions using efficiency not considering moral values.
8 0
3 years ago
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