My experience with entrepreneurship education for science students: Prospects and challengesMy experience with entrepreneurship education for science students: Prospects and challenges

#1 The population of scores on the in-person version of Dr. Hale’s first statistics test forms a normal distribution with μ = 72 and σ = 6. He thinks the online class will do significantly better because they do a TON of extra homework that the other class doesn’t do. He gives a random sample of n = 25 students the test, and this sample got an average of 75. What conclusion should he draw if this was a 2-tailed test with alpha = .05?

#2 The population of scores on the in-person version of Dr. Hale’s first statistics test forms a normal distribution with μ = 72 and σ = 6. He thinks the online class will do significantly better because they do a TON of extra homework that the other class doesn’t do. He gives a random sample of n = 25 students the test, and this sample got an average of 75. What was the null hypothesis for this study?

#3 When computing z for a sample mean, which quantity is the denominator?

#4 The population of scores on the in-person version of Dr. Hale’s first statistics test forms a normal distribution with μ = 72 and σ = 6. He thinks the online class will do significantly better because they do a TON of extra homework that the other class doesn’t do. He gives a random sample of n = 25 students the test, and this sample got an average of 75. What conclusion should he draw if this was a 2-tailed test with alpha = .01?

#5 Which of the following is not a step or rule in a hypothesis test?

#6 The population of scores on the in-person version of Dr. Hale’s first statistics test forms a normal distribution with μ = 72 and σ = 6. He thinks the online class will do significantly better because they do a TON of extra homework that the other class doesn’t do. He gives a random sample of n = 25 students the test, and this sample got an average of 75. What was the alternative hypothesis for this study?

///create a main menu to enter choices such as "Welcome to any college" then please enter your choice of information when you press a key 1. view students. 2. insert student 3. remove student 4. exit...and student ID#, age, birthday, location, expected gradation date

import java.util.Scanner;

public class CourseCOM666 {
private String courseName;
private String [] students = new String[1];
private int numberOfStudents;

public CourseCOM666(String courseName) {
this.courseName = courseName;
}
public String[] getStudents(){
return students;
}
public int getNumberOfStudents(){
return numberOfStudents;
}
public String getCourseName(){
return courseName;
}

public void addStudent(String student) {
// Automatically increases the array size
if (numberOfStudents == students.length) {
String[] a = new String[students.length + 1];
for (int i = 0; i < numberOfStudents; i++) {
a[i] = students[i];
}
students = a;
}
students[numberOfStudents] = student;
numberOfStudents++;
}
public String[] addStudentByIndex(String student,int index){
String [] a = new String[students.length+1];
if (numberOfStudents == students.length){

for (int i = 0; i < a.length;i++){
if(i < index){
a[i] = students[i];
}
else if (i == index ){
a[i] = student;
}
else{
a[i] = students[i-1];
}}
}
numberOfStudents++;
return a;

}
public static void display(String[]students){
System.out.println("========================");
System.out.print("Now the New students Array is :\n");
for(int i=0; i<students.length; i++)
{
System.out.println("Index: "+(i)+"--> "+ students[i]+" ");
}
}



public String [] removeStudentByIndex(String [] a,int index){
//find the index of student
String [] b = new String[a.length-1];
students = a;
// int position = findStudent(student);
for (int i = 0,k=0; i < a.length;i++){
if (i == index){
continue;
}
else{
b[k++] = a[i];
}
}
numberOfStudents--;


return b;

}
private int findStudent(String student) {
for (int i = 0; i < numberOfStudents; i++) {
if (students[i].equals(student)) {
return i;
}
}
return -1;
}



}
import java.util.Scanner;

public class d {
public static void main(String [] args){
CourseCOM666 com666 = new CourseCOM666("com666");
com666.addStudent("hank");
com666.addStudent("paul");
com666.addStudent("david");
com666.addStudent("ben");
com666.addStudent("jacob");

int sum = 0;
////////create a new array String students1[] to hold all students/////////////////////
String students1[] = com666.getStudents();

sum += com666.getNumberOfStudents();
for(int i =0; i<students1.length; i++) {
System.out.println("Index is: "+(i)+ " --> "+students1[i]);
}

System.out.println("Number of students attending the Course is: " + sum);

Scanner scan = new Scanner(System.in);
System.out.println("Enter the name of student and index:");
String student = scan.nextLine();
students1 = com666.addStudentByIndex(student,3);
com666.display(students1);

sum = com666.getNumberOfStudents();
System.out.println("After student was added the Student number is:" + sum);


System.out.println("remove student by index");
int index = scan.nextInt();
students1=com666.removeStudentByIndex(students1,index);
com666.display(students1);
sum = com666.getNumberOfStudents();
System.out.println("After student drop number is:" + sum);
System.out.println("Number of students attending the Course is: " + sum);
System.out.println("----------------------------");

//use do while loops

Saved

A student at a university wants to determine if the proportion of students that use iPhones is greater than 0.4. The hypotheses for this scenario are as follows. Null Hypothesis: p ≤ 0.4, Alternative Hypothesis: p > 0.4. If the student randomly samples 27 other students and finds that 12 of them use iPhones, what is the test statistic and p-value?

Question 7 options:

Question 8 (1 point)

A suggestion is made that the proportion of people who have food allergies and/or sensitivities is 0.66. You believe that the proportion is actually less than 0.66. The hypotheses for this test are Null Hypothesis: p ≥ 0.66, Alternative Hypothesis: p < 0.66. If you select a random sample of 20 people and 13 have a food allergy and/or sensitivity, what is your test statistic and p-value?

Question 8 options:

Question 9 (1 point)

A student at a university wants to determine if the proportion of students that use iPhones is greater than 0.43. The hypotheses for this scenario are as follows. Null Hypothesis: p ≤ 0.43, Alternative Hypothesis: p > 0.43. If the student takes a random sample of students and calculates a p-value of 0.0168 based on the data, what is the appropriate conclusion? Conclude at the 5% level of significance.

Question 9 options:

Question 10 (1 point)

A student at a university wants to determine if the proportion of students that use iPhones is greater than 0.41. The hypotheses for this scenario are as follows. Null Hypothesis: p ≤ 0.41, Alternative Hypothesis: p > 0.41. If the student takes a random sample of students and calculates a p-value of 0.2807 based on the data, what is the appropriate conclusion? Conclude at the 5% level of significance.

Question 10 options:

According to the Institute for Students in Shackles, 70% of all college students in a recent year graduated with student loan debt.  The University of Florida reports that only 52% of its graduates from a random sample of 500 students have student loan debt. Use a hypothesis test to determine if there is enough evidence to support UF’s claim that student loan debt is less.

a) State your null and alternative hypothesis.

b) Find p-hat, SD, Z, and the P-value

An observational study of a group of students was conducted, and students were classified in two ways. First, they were each classified as to whether or not they were FullTime or PartTime. Second, they were each classified as to which of two colleges they were in, COS (college of sciences) or CBA (college of business administration). From that data, the following partial joint probability table was constructed.

Please answer the following questions about the probability of drawing students at random from this group according to the table above.  Please keep your answers as fractions (e.g., "3/7").

• What is the marginal probability that a random student will be from COS (college of science)?  
• What is the joint probability that a random student will be both part-time and from CBA (college of business administration)?
• If I already know the student is from CBA, what is the probability they are a full time?

To estimate the average SAT scores of students in a college, six students in the college are randomly selected and their SAT scores are as follows: 1350, 1450, 1320, 1480, 1300, 1400.

(a) (3 points) What is the population of interest?

(b) (3 points) What is the value of sample median?

(c) (6 points) What is the lower quartile Q1 and the upper quartile Q3 ?

(d) (3 points) What is the value of sample mean?

(e) (5 points) What is the value of sample standard deviation?

A random sample of 250 students at a university finds that these students take a mean of 14.3 credit hours per quarter with a standard deviation of 1.5 credit hours. Estimate the mean credit hours taken by a student each quarter using a 98​% confidence interval.

The Dean of Students at UTC has said that the average grade of UTC students is higher than that of the students at GSU. Random samples of grades from the two schools are selected, and the results are shown below.

At a 0.1 level of significance, conduct a test of hypothesis to assist the Dean evaluate his hypothesis. If the test statistic value for this problem is 1.61, what statement can be made about the Dean of Student's statement?

Select one:

A. Reject null hypothesis, therefore, reject Dean's statement

B. Fail to reject null hypothesis, therefore, don't reject Dean's statement

C. Fail to reject null hypothesis, therefore, reject Dean's statement

D. Reject null hypothesis, therefore, don't reject Dean's statement

At the local high school, there are 297 students. 71 students are seniors, and out of the 71 students, 53 participate in a sport (while 18 do not participate in a sport). Among those who are not seniors, 69 students participate in a sport and 157 do not. Suppose we choose one student at random from the entire class.

A. Are events "drawing someone who is a senior" and "drawing someone who does not play a sport" mutually exclusive? Why/why not?

B. Are events "drawing someone who is a senior" and "drawing someone who does not play a sport" independent? Why/why not?

(C-E) Suppose you draw five students at random without replacement.

C. What is the conditional probability that the second student drawn is a senior, if the first student drawn is a senior?

D. What is the probability that the second student drawn is a senior, without knowing anything about the first student?

E. What is the probability that among the five students, one of them is a senior?