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ANEK [815]
3 years ago
5

You are a Data Scientist at Anthem Blue Cross Blue Shield. You want to check if a patient will develop diabetes. Please write th

e R code to split the dataframe into test and training data. The proportion of split is 85/15, and the sample stratification needs to be done on the variable - age.
Computers and Technology
1 answer:
Sergio039 [100]3 years ago
6 0

Answer:

666

Explanation:

You are a Data Scientist at Anthem Blue Cross Blue Shield. You want to check if a patient will develop diabetes. Please write the R code to split the dataframe into test and training data. The proportion of split is 85/15, and the sample stratification needs to be done on the variable

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Create a method called nicknames that passes an array as a parameter. Inside the method initialize it to hold 5 names of your ch
Gre4nikov [31]
<h2>Answer:</h2>

    //======METHOD DECLARATION=========//          

    //method name: nicknames                                          

    //method return type: void                                            

    //method parameter: an array reference                    

    public static void nicknames(String [] names){      

       //initialize the array with 5 random names              

       names = new String[] {"John", "Doe", "Brian", "Loveth", "Chris"};

       //using an enhanced for loop, print out the elements in the array

       for(String n: names){

           System.out.print(n + " ");

       }

       

    }

<h2>Explanation:</h2>

The program is written in Java. It contains comments explaining important parts of the code. Kindly go through these comments.

A few things to note.

i. Since the method does not return any value, its return type is <em>void</em>

ii. The method is made public so that it can be accessible anywhere in and out of the class the uses it.

iii. The method is made static since it will most probably be called in the static main method (at least for testing in this case)

iv. The method receives an array of type <em>String </em>as parameter since the names to be stored are of type <em>String</em>.

v. The format of initializing an array manually should follow as shown on line 7. The <em>new</em> keyword followed by the array type (String), followed by the square brackets ([]) are all important.

vi. An enhanced for loop (lines 9 - 11) is a shorthand way of writing a for loop. The format is as follows;

=> The keyword <em>for</em>

=> followed by an opening parenthesis

=> followed by the type of each of the elements in the array. Type String in this case.

=> followed by a variable name. This holds an element per cycle of the loop.

=> followed by a column

=> followed by the array

=> followed by the closing parenthesis.

=> followed by a pair of curly parentheses serving as a block containing the  code to be executed in every cycle of the loop. In this case, the array elements, each held in turn by variable n, will be printed followed by a space.

A complete code and sample output for testing purposes are shown as follows:

==================================================

public class Tester{

    //The main method

    public static void main(String []args){

       

       String [] names = new String[5];

       nicknames(names);

    }

   

  //The nicknames method

    public static void nicknames(String [] names){

       names = new String[] {"John", "Doe", "Brian", "Loveth", "Chris"};

       for(String n: names){

           System.out.print(n + " ");

       }

       

    }

}

==================================================

<h2>Output:</h2>

John Doe Brian Loveth Chris

<em>NB: To run this program, copy the complete code, paste in an IDE or editor and save as Tester.java</em>

6 0
3 years ago
In step 4 of the CSMA/CA protocol, a station that successfully transmits a frame begins the CSMA/CA protocol for a second frame
DerKrebs [107]

Answer:

There could be a collision if a hidden node problem occurs.

Explanation:

CSMA/CA(carrier sense multiple access/ collision avoidance) is a multiple access method in wireless networking, that allows multiple node to transmit. Collision avoidance of this method is based on preventing signal loss or downtime as a result of collision of transmitting multi signals.

If a node at step 4(transmit frame) sends the first frame, the node still needs to send a RTS(request to send) and to receive a Clear to send (CTS) from the WAP, the is to mitigate the issue of hidden node problem as all frame are treated as unit, so other listening nodes, not detected would seek to connect and transmit as well.

5 0
3 years ago
I Need Help with 6.1.3 circles in squares in codehs
ycow [4]

The program below is able to calculate the area of a circle inscribed in a Square.

<h3>What is a program?</h3>

A program is a set of instructions given to the computer with specific end results in mind.

<u>Sample program in Java

</u>// Java Program to find the area of

// an inscribed circle in a square.

import java.io.*;

class GFG {

   

   static double PI = 3.14;

   

   // Function to find area of an

   // inscribed circle in a square.

   static double areaOfInscribedCircle(float a)

   {

       return ( PI / 4 ) * a * a;

   }

   // Driver code

   public static void main (String[] args)

   {

       float a = 8;

   

       System.out.println("Area of an inscribed"

       + " circle: " + areaOfInscribedCircle(a));

   }

}

Learn more about programs at :
brainly.com/question/1538272
#SPJ1

5 0
2 years ago
Write a Python program that can compare the unit (perlb) cost of sugar sold in packages with different weights and prices. The p
Virty [35]

Answer:

<em>This program is written using python</em>

<em>It uses less comments (See explanation section for more explanation)</em>

<em>Also, see attachments for proper view of the source code</em>

<em>Program starts here</em>

<em></em>

#Prompt user for price of package 1

price1 = int(input("Enter Price 1: "))

while(price1 <= 0):

     price1 = int(input("Enter Price 1: "))

#Prompt user for weight of package 1

weight1 = int(input("Enter Weight 1: "))

while(weight1 <= 0):

     weight1 = int(input("Enter Weight 1: "))

#Calculate Unit of Package 1

unit1 = float(price1/weight1)

print("Unit cost of Package 1: "+str(unit1))

#Prompt user for price of package 2

price2 = int(input("Enter Price 2: "))

while(price2 <= 0):

     price2 = int(input("Enter Price 2: "))

#Prompt user for weight of package 2

weight2 = int(input("Enter Weight 2: "))

while(weight2 <= 0):

     weight2 = int(input("Enter Weight 2: "))

#Calculate Unit of Package 2

unit2 = float(price2/weight2)

print("Unit cost of Package 2: "+str(unit2))

#Compare units

if unit1 > unit2:

     print("Package 1 has a better price")

elif unit1 == unit2:

     print("Both Packages have the same price")

else:

     print("Package 2 has a better price")

<em></em>

Explanation:

price1 = int(input("Enter Price 1: ")) -> This line prompts the user for price of package 1

The following while statement is executed until user inputs a value greater than 1 for price

while(price1 <= 0):

     price1 = int(input("Enter Price 1: "))

weight1 = int(input("Enter Weight 1: ")) -> This line prompts the user for weight of package 1

The following while statement is executed until user inputs a value greater than 1 for weight

while(weight1 <= 0):

     weight1 = int(input("Enter Weight 1: "))

unit1 = float(price1/weight1) -> This line calculates the unit cost (per weight) of package 1

print("Unit cost of Package 1: "+str(unit1)) -> The unit cost of package 1 is printed using this print statement

price2 = int(input("Enter Price 2: ")) -> This line prompts the user for price of package 2

The following while statement is executed until user inputs a value greater than 1 for price

while(price2 <= 0):

     price2 = int(input("Enter Price 2: "))

weight2 = int(input("Enter Weight 2: ")) -> This line prompts the user for weight of package 2

The following while statement is executed until user inputs a value greater than 1 for weight

while(weight2 <= 0):

     weight2 = int(input("Enter Weight 2: "))

unit2 = float(price2/weight) -> This line calculates the unit cost (per weight) of package 2

print("Unit cost of Package 2: "+str(unit2)) -> The unit cost of package 2 is printed using this print statement

The following if statements compares and prints which package has a better unit cost

  • <em>If unit cost of package 1 is greater than that of package 2, then package 1 has a better price</em>
  • <em>If unit cost of both packages are equal then they both have the same price</em>
  • <em>If unit cost of package 2 is greater than that of package 1, then package 2 has a better price</em>

if unit1 > unit2:

     print("Package 1 has a better price")

elif unit1 == unit2:

     print("Both Packages have the same price")

else:

     print("Package 2 has a better price")

4 0
3 years ago
A record company is using blockchain to manage the ownership of their copyrighted content. The company requires that every time
Fantom [35]

By creating a smart contract to calculate party royalties

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3 years ago
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