Question

In: Statistics and Probability

For a project in his statistics class, a student is attempting to create a formula for...

For a project in his statistics class, a student is attempting to create a formula for the number of cars in the dorm parking lot that are either sedans, SUVs or pickup trucks.  His formula states that there should be 20% sedans, 55% SUVs and 25% pickups.

To validate his formula, he finds the following actual values for the 100 vehicles in the lot:

Sedan: 25 SUV: 45 Pickup: 30

Can we believe that his formula is correct? Use an alpha value of .05.

Solutions

Expert Solution



Related Solutions

Java Create a Project named Chap4b 1. Create a Student class with instance data as follows:...
Java Create a Project named Chap4b 1. Create a Student class with instance data as follows: student id, test1, test2, and test3. 2. Create one constructor with parameter values for all instance data fields. 3. Create getters and setters for all instance data fields. 4. Provide a method called calcAverage that computes and returns the average test score for an object to the driver program. 5. Create a displayInfo method that receives the average from the driver program and displays...
Create a class called Student which stores • the name of the student • the grade...
Create a class called Student which stores • the name of the student • the grade of the student • Write a main method that asks the user for the name of the input file and the name of the output file. Main should open the input file for reading . It should read in the first and last name of each student into the Student’s name field. It should read the grade into the grade field. • Calculate the...
DROP DATABASE class;CREATE DATABASE class;Use class;drop table if exists Class;drop table if exists Student;CREATE TABLE Class...
DROP DATABASE class;CREATE DATABASE class;Use class;drop table if exists Class;drop table if exists Student;CREATE TABLE Class (CIN int PRIMARY KEY, FirstName varchar(255), LastName varchar(255), Gender varchar(1), EyeColor varchar(50), HairColor varchar(50), HeightInches int,CurrentGrade varchar(1));CREATE TABLE Student (SSN int PRIMARY KEY,FirstName varchar(255),LastName varchar(255), Age int,BirthMonth varchar(255),HeightInches int,Address varchar(255),City varchar(255),PhoneNumber varchar(12),Email varchar(255),FavColor varchar(255),FavNumber int);INSERT INTO Class VALUES(1, "David", "San", "M", "BRN", "BLK", 72, "-");INSERT INTO Class VALUES(2, "Jeff", "Gonzales", "M", "BRN", "BLK", 68, "B");INSERT INTO Class VALUES(3, "Anna", "Grayson", "F", "BRN", "BRN", 62,...
As part of a course project, a statistics student surveyed random samples of 50 student athletes...
As part of a course project, a statistics student surveyed random samples of 50 student athletes and 50 student non-athletes at his university, with the goal of comparing the heights of the two groups. His summary statistics are displayed in the provided table. n s Athletes 50 68.96 4.25 Non-athletes 50 67.28 3.46 a). Which data analysis method is more appropriate in this situation: paired data difference in means or difference in means with two separate groups? Explain briefly. b)....
create a project and in it a class with a main. We will be using the...
create a project and in it a class with a main. We will be using the Scanner class to read from the user. At the top of your main class, after the package statement, paste import java.util.Scanner; Part A ☑ In your main method, paste this code. Scanner scan = new Scanner(System.in); System.out.println("What is x?"); int x = scan.nextInt(); System.out.println("What is y?"); int y = scan.nextInt(); System.out.println("What is z?"); int z = scan.nextInt(); System.out.println("What is w?"); int w = scan.nextInt();...
Create a Java project called Lab3B and a class named Lab3B. Create a second new class...
Create a Java project called Lab3B and a class named Lab3B. Create a second new class named Book. In the Book class: Add the following private instance variables: title (String) author (String) rating (int) Add a constructor that receives 3 parameters (one for each instance variable) and sets each instance variable equal to the corresponding variable. Add a second constructor that receives only 2 String parameters, inTitle and inAuthor. This constructor should only assign input parameter values to title and...
Create a Java project called Lab3A and a class named Lab3A. Create a second new class...
Create a Java project called Lab3A and a class named Lab3A. Create a second new class named Employee. In the Employee class: Add the following private instance variables: name (String) job (String) salary (double) Add a constructor that receives 3 parameters (one for each instance variable) and sets each instance variable equal to the corresponding variable. (Refer to the Tutorial3 program constructor if needed to remember how to do this.) Add a public String method named getName (no parameter) that...
Create a Java project called 5 and a class named 5 Create a second new class...
Create a Java project called 5 and a class named 5 Create a second new class named CoinFlipper Add 2 int instance variables named headsCount and tailsCount Add a constructor with no parameters that sets both instance variables to 0; Add a public int method named flipCoin (no parameters). It should generate a random number between 0 & 1 and return that number. (Important note: put the Random randomNumbers = new Random(); statement before all the methods, just under the...
Create a new Java project called lab1 and a class named Lab1 Create a second class...
Create a new Java project called lab1 and a class named Lab1 Create a second class called VolumeCalculator. Add a static field named PI which = 1415 Add the following static methods: double static method named sphere that receives 1 double parameter (radius) and returns the volume of a sphere. double static method named cylinder that receives 2 double parameters (radius & height) and returns the volume of a cylinder. double static method named cube that receives 1 double parameter...
On his way to class, a student on a skateboard is accelerating on a downhill stretch....
On his way to class, a student on a skateboard is accelerating on a downhill stretch. Which of the following are true. I know the answer is a) the skateboarder is moving in the direction of the net force b) the skateboarder is subjected to a net external force in the direction of motion c) the skateboarders acceleration is in the direction of the net force I am struggling to understand why all three of these answers are correct. Could...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT