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snow_lady [41]
3 years ago
14

A group of researchers is designing an experiment to test whether meditation helps people fall asleep faster. The researchers se

lected a sample of 150 people, and over the next two months, 75 of them will meditate nightly for 15 minutes before going to bed whereas the remaining 75 will follow their normal bedtime routine. At the end of the two months, the researchers will compare the average length of time it takes each group to fall asleep.Why is it important that the researchers use randomization to assign each of the people to a treatment group?1. Randomization prevents the researchers from specifically assigning all people who regularly fall asleep quickly to meditate nightly for 15 minutes before going to bed.2.Randomization prevents the people from selecting their own treatment group.3.Randomization ensures that there will be an equal number of people in each treatment group.4.Randomization eliminates lurking variables from the experiment.5.Randomization ensures each treatment group will be similar in everything except whether or not they meditate before bed.
Computers and Technology
1 answer:
storchak [24]3 years ago
3 0

Answer:

Option 4 is the correct answer.

Explanation:

<h2>Randomization eliminates lurking variables from the experiment.</h2><h2 />

Randomization is adopted due to the fact that it removes lurking variables. By lurking variables we mean the extraneous variables which are unknown but can effect the other variables that are of interest.

Randomization is necessary in experiments to ensure that the generated result may not be biased or misleading.

<h3>I hope it will help you!</h3>
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The Loanable Funds Market is built very similar to the Supply &amp; Demand Model. The Loanable Funds Market relates ____________
lawyer [7]
A should be the right answer
3 0
3 years ago
Give short answers.
Mkey [24]

Answer:

H) Well it depends how you put it. I'm Doing virtual School for my education. And it is so easy when we have technology out their to provide the help that we need. So I think it has affected education pretty good. You can Also google the answers.

I) Looking up Answers at home

J) Parents can check up on their child's school work and see if they can help them. Also The law is involved in Education.

K) It depend's on how you put it

Explanation:

Short Answers

6 0
3 years ago
Which of the following statements is false? A constructor is similar to a method but is called implicitly by the new operator to
Volgvan

COMPLETE QUESTION:

Which of the following statements is false?

A) A constructor is similar to a method but is called implicitly by the new operator to initialize an object's instance variables at the time the object is created.

B0 Scanner method next reads characters until any white-space character is encountered, then returns the characters as a String.

C)A class instance creation expression begins with keyword new and creates a new object.

D) To call a method of an object, follow the object name with a comma, the method name and a set of parentheses containing the method's arguments.

Answer:

D) To call a method of an object, follow the object name with a comma, the method name and a set of parentheses containing the method's arguments.

Explanation:

To call a method, the name of the object is not followed by a comma (,) but with a dot (.) operator, the method's name and a set of parentheses containing the method's arguments, then follows.

4 0
3 years ago
5.18 LAB: Output numbers in reverse Write a program that reads a list of integers, and outputs those integers in reverse. The in
Rina8888 [55]

Answer:

In C++:

#include<iostream>

#include<vector>

using namespace std;

int main(){

   int len, num;

   vector<int> vect;

   cout<<"Length: ";

   cin>>len;  

   for(int i = 0; i<len;i++){

       cin>>num;

   vect.push_back(num);}

   vector<int>::iterator iter;

   for (iter = vect.end() - 1; iter >= vect.begin(); iter--){

       cout << *iter << ", ";}    

}

Explanation:

This declares the length of vector and input number as integer

   int len, num;

This declares an integer vector

   vector<int> vect;

This prompts the user for length  

cout<<"Length: ";

This gets the input for length  

   cin>>len;  

The following iteration gets input into the vector

<em>    for(int i = 0; i<len;i++){</em>

<em>        cin>>num;</em>

<em>    vect.push_back(num);}</em>

This declares an iterator for the vector

   vector<int>::iterator iter;

The following iterates from the end to the beginning and prints the vector in reverse

<em>    for (iter = vect.end() - 1; iter >= vect.begin(); iter--){</em>

<em>        cout << *iter << ", ";}</em>

<em />

<em />

6 0
3 years ago
The only type of donation you can make to a not for profit is to donate money
amm1812
The correct answer is true
5 0
3 years ago
Read 2 more answers
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