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melomori [17]
3 years ago
13

To estimate the percentage of defects in a recent manufacturing​ batch, a quality control manager at Sony selects every 14th mus

ic CD that comes off the assembly line starting with the eighth until she obtains a sample of 100 music CDs. What type of sampling is​ used? A. Cluster B. Stratified C. Systematic D. Convenience E. Simple random
Computers and Technology
1 answer:
sukhopar [10]3 years ago
8 0

Answer:C. Systematic Sampling

Explanation:

Systematic sampling is a type of probability sampling method in which sample members from a larger population are selected according to a random starting point but with a fixed, periodic interval. This interval, called the sampling interval, is calculated by dividing the population size by the desired sample size.

Systematic sampling involves selecting items from an ordered population using a skip or sampling interval. The use of systematic sampling is more appropriate compared to simple random sampling when a project's budget is tight and requires simplicity in execution and understanding the results of a study.

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Give a tight bound on the number of times the z = z + 1 statement is executed. i = 2 while ( i > 1 ) { i = floor(i/2) z = z +
Alinara [238K]

Answer:

zero ( 0) times.

Explanation:

In the code;

i = 2

while ( i > 2){

     i = floor( i/2 );

     z = z + 1;

}

the variable " i " is assigned the integer " 2 ", then the while statement loops with a condition of a greater " i " value and divides the value by two for every loop.

But in this case, the while statement is not executed as the value of " i " which is 2 is not greater than but equal to two.

4 0
2 years ago
Construct a SQL query that displays a list of colleges, their sity/state, the accrediting agency, and whether or not the school
Alex787 [66]

Answer:

SELECT college, city_state, accre_agency, distance LIMIT 10

Explanation:

Given

Table name: College

See attachment for table

Required

Retrieve top 10 college, state, agency and school distance from the table

To retrieve from a table, we make use of the SELECT query

The select statement is then followed by the columns to be selected (separated by comma (,))

So, we have:

SELECT college, city_state, accre_agency, distance

From the question, we are to select only first 10 records.

This is achieved using the LIMIT clause

i.e. LIMIT 10 for first 10

So, the complete query is:

SELECT college, city_state, accre_agency, distance LIMIT 10

6 0
3 years ago
Ken Olson, president of Digital Equipment Corp. in the late 1970's, Thomas J. Watson, chairman of IBM in the early 1940's, and T
tensa zangetsu [6.8K]

Answer:

All of the above is the correct answer to the given question .

Explanation:

As the Ken olson is the Ken Olson, president of the Digital Equipment Organization . Following are the predictions of  Ken olson of the the technology that are wrong.

  • Lack of creativity regarding the current applications that the user has would consider for the  technology.
  • Lack of creativity regarding the  user or the client has liking.
  • Lack of creativity on what the government would be charging ford. Any of these

So we will choose the Option all these.

8 0
3 years ago
PLEASE HELP!!
Anika [276]

Answer:

the answer is true

hope it helps

7 0
3 years ago
Read 2 more answers
Create a Quadrilateral, Oval, Triangle, Polygon class that are all extended from an abstract Shape class (given below). Then ext
Lostsunrise [7]

Answer:

Shapes.java

public abstract class Shapes {

}

Triangle.java

public abstract class Triangle extends Shapes {

}

IsoscelesTriangle.java

public class IsoscelesTriangle extends Triangle {

double side1;

double side2;

public double getSide1() {

return side1;

}

public void setSide1(double side1) {

this.side1 = side1;

}

public double getSide2() {

return side2;

}

public void setSide2(double side2) {

this.side2 = side2;

}

public IsoscelesTriangle(double side1, double side2) {

super();

this.side1 = side1;

this.side2 = side2;

}

public double perimeter()

{

return 2*side1+side2;

}

public double area()

{

return side1*side2/2;

}

}

EquilateralTriangle.java

public class EquilateralTriangle extends Triangle {

double side;

public EquilateralTriangle(double side) {

super();

this.side = side;

}

public double getSide() {

return side;

}

public void setSide(double side) {

this.side = side;

}

public double perimeter()

{

return 3*side;

}

public double area()

{

return 1.73205*side*side/4;

}

}

Quadrilateral.java

public abstract class Quadrilateral extends Shapes {

}

Rectangle.java

public class Rectangle extends Quadrilateral {

double length;

double breadth;

public double getLength() {

return length;

}

public void setLength(double length) {

this.length = length;

}

public double getBreadth() {

return breadth;

}

public void setBreadth(double breadth) {

this.breadth = breadth;

}

public Rectangle(double length, double breadth) {

super();

this.length = length;

this.breadth = breadth;

}

public double perimeter()

{

return 2*(length+breadth);

}

public double area()

{

return length*breadth;

}

}

Square.java

public class Square extends Quadrilateral {

double side;

public Square(double side) {

super();

this.side = side;

}

public double getSide() {

return side;

}

public void setSide(double side) {

this.side = side;

}

public double perimeter()

{

return 4*side;

}

public double area()

{

return side*side;

}

}

Rhombus.java

public class Rhombus extends Quadrilateral {

double length;

double breadth;

public Rhombus(double length, double breadth) {

super();

this.length = length;

this.breadth = breadth;

}

public double getLength() {

return length;

}

public void setLength(double length) {

this.length = length;

}

public double getBreadth() {

return breadth;

}

public void setBreadth(double breadth) {

this.breadth = breadth;

}

public double perimeter()

{

return 2*(length+breadth);

}

public double area()

{

return length*breadth/2;

}

}

Test.java

import java.util.Scanner;

public class Test {

public static void main(String[] args) {

// TODO Auto-generated method stub

Scanner sc=new Scanner(System.in);

System.out.println("Enter your choice");

System.out.println("1. Create IsoscelesTriangle ");

System.out.println("2. Create EquilateralTriangle");

System.out.println("3. Create Rectangle");

System.out.println("4. Create Square");

System.out.println("5. Create Rhombus");

System.out.println("6. Create Circle");

int choice=sc.nextInt();

switch(choice)

{

case 1:

System.out.println("Enter two sides of triangle");

double side1=sc.nextDouble();

double side2=sc.nextDouble();

IsoscelesTriangle isosceles=new IsoscelesTriangle(side1, side2);

System.out.println("Area of the triangle is "+isosceles.area());

System.out.println("Perimeter of the triangle is "+ isosceles.perimeter());

break;

case 2:

System.out.println("Enter side of the triangle");

double side=sc.nextDouble();

EquilateralTriangle equilateralTriangle=new EquilateralTriangle(side);

System.out.println("Area of the triangle is "+equilateralTriangle.area());

System.out.println("Perimeter of the triangle is "+ equilateralTriangle.perimeter());

break;

case 3:

System.out.println("Enter length and breadth");

double length=sc.nextDouble();

double breadth=sc.nextDouble();

Rectangle rectangle =new Rectangle(length, breadth);

System.out.println("Area of rectangle is "+rectangle.area());

System.out.println("Perimeter of the rectangle is "+rectangle.perimeter());

break;

case 4:

System.out.println("Enter side of the square");

double squareside=sc.nextDouble();

Square square=new Square(squareside);

System.out.println("area of the square is "+square.area());

System.out.println("Perimeter of the square is "+square.perimeter());

break;

case 5:

System.out.println("Enter length and breadth of rhombus");

double rlength=sc.nextDouble();

double rbreadth=sc.nextDouble();

Rhombus rhombus=new Rhombus(rlength, rbreadth);

System.out.println("area of the rhombus is "+rhombus.area());

System.out.println("Perimeter of the rhombus is "+rhombus.perimeter());

break;

case 6:

System.out.println("Enter radius of circle");

double radius=sc.nextDouble();

Circle circle=new Circle(radius);

System.out.println("area of the circle is "+circle.area());

System.out.println("Perimeter of the circle is "+circle.perimeter());

break;

}

}

}

8 0
3 years ago
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