The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports. The maximum possible rating is 10. Suppose a simple random sample of 50 business travelers is selected and each traveler is asked to provide a rating for the Miami International Airport. The ratings obtained from the sample of 50 business travelers follow.

Develop a 95% confidence interval estimate of the population mean rating for Miami (to 2 decimals).

( , )

1.         Below are the scores of employees hired 6 months ago for their performance on a cognitive ability test and job performance over the last 6 months. Calculate the Pearson's correlation coefficient (bivariate correlation) in an excel spread sheet. Assess the validity coefficient to see if the cognitive ability test they used is valuable for predicting job performance…discuss why the test is or isn't valuable to be used for selection.

2.         Two applicants take a selection test with a mean of 70, a standard deviation of 8, and a standard error of measurement of 9.75. Applicant A scores a 90 on the test while Applicant B scores a 95. What is the standardized score for Applicant A? How do you interpret this number?

3.         What is the standardized score for Applicant B? How do you interpret this number?

4.         What is the standardized score for an applicant scoring 65 on the test? How do you interpret this score?

5.         A job applicant scores 1.42 standard deviations above the mean on a test that has a mean of 25 and a standard deviation of 1.50. What is the job applicant’s raw score?

6.         Baldridge runs a simple regression using the scores on the cognitive ability test as a predictor of their current employees’ job performance. They find that the best fitting equation is:

ŷ = -2.368 + .079 (Cognitive Ability)

Calculate the predicted performance for each of the following job applicants, and determine who would have the highest performance score:

I need this in C# please.

Exercise #2: Design and implement a programming (name it NextMeeting) to determine the day of your next meeting from today. The program reads from the user an integer value representing today’s day (assume 0 for Sunday, 1 for Monday, 2 for Tuesday, 3 for Wednesday, etc…) and another integer value representing the number of days to the meeting day. The program determines and prints out the meeting day. Format the outputs following the sample runs below.

Sample run 1:

Today is Monday

Days to the meeting is 10 days

Meeting day is Thursday

Sample run 2:

Today is Wednesday

Days to the meeting is 7 days

Meeting day is Wednesday

Sample run 3:

Today is Friday

Days to the meeting is 20 days

Meeting day is Thursday

PLEASE DO THIS IN JAVA!Design and implement a programming (name it NextMeeting) to determine the day of your next meeting from today. The program reads from the user an integer value representing today’s day (assume 0 for Sunday, 1 for Monday, 2 for Tuesday, 3 for Wednesday, etc…) and another integer value representing the number of days to the meeting day. The program determines and prints out the meeting day. Format the outputs following the sample runs below.

Sample run 1:

Today is Monday

Days to the meeting is 10 days

Meeting day is Thursday

Sample run 2:

Today is Wednesday

Days to the meeting is 7 days

Meeting day is Wednesday

Sample run 3:

Today is Friday

Days to the meeting is 20 days

Meeting day is Thursday

Java:

Declare a two-dim array that represents five students with four test scores.

Assign 100 for all tests to all students.

Change the 3rd student’s test 2 to 50.

Change the last student’s last test to 87

Print out all test scores.

Calculate the total points of all tests of all students

According to an​ article, 47​% of adults have experienced a breakup at least once during the last 10 years. Of 9 randomly selected​ adults, find the probability that the​ number, X, who have experienced a breakup at least once during the last 10 years is

a. exactly​ five; at most​ five; at least five.

b. at least​ one; at most one.

c. between five and seven​, inclusive.

d. Determine the probability distribution of the random variable X.

Write a class to implement HeadTailListInterface. Instead of using an array, use a List object as your instance data variable. (List (Links to an external site.) from the Java standard library- not ListInterface!). Instantiate the List object to type ArrayList.

Inside the methods of this class, invoke methods on the List object to accomplish the task. Note: some methods might look very simple... this does not mean they are wrong!

There is one difference in how this class will work compared to the other: in this extra credit class, you do not have control over the capacity, so you should not print the capacity in display and the capacity does not have to be exactly doubled in the two add methods.

For full credit:

• Pay close attention to what should happen in "failed" conditions as described by the HeadTailListInterface compared to List!
• Make sure your ListHeadTailList behaves as described in HeadTailListInterface.
• Use the methods of the List interface/ArrayList class when possible instead of re-writing the code yourself.

The class header and instance data will be:

public class ListHeadTailList<T> implements HeadTailListInterface<T>

List<T> list; // initialize to type ArrayList<T> in the ListHeadTailList constructor

------------------------------------------------------------------------------------------------------------------------------------------------

/**
* An interface for a list. Entries in a list have positions that begin with 0.
* Entries can only be removed or added to the beginning and end of the list.
* Entries can be accessed from any position.
*
* @author Jessica Masters
*/
public interface HeadTailListInterface<T> {
  
   /**
   * Adds a new entry to the beginning of the list.
   * Entries currently in the list are shifted down.
   * The list size is increased by 1.
   *
   * @param newEntry The object to be added as a new entry.
   */
   public void addFront(T newEntry);
  
   /**
   * Adds a new entry to the end of the list.
   * Entries currently in the list are unaffected.
   * The list size is increased by 1.
   *
   * @param newEntry The object to be added as a new entry.
   */
   public void addBack(T newEntry);

   /**
   * Removes an entry from the beginning of the list.
   * Entries currently in the list are shifted up.
   * The list size is decreased by 1.
   *
   * @return A reference to the removed entry or null if the list is empty.
   */
   public T removeFront();
  
   /**
   * Removes an entry from the end of the list.
   * Entries currently in the list are unaffected.
   * The list size is decreased by 1.
   *
   * @return A reference to the removed entry or null if the list is empty.
   */
   public T removeBack();

  
   /** Removes all entries from this list. */
   public void clear();

  
   /**
   * Retrieves the entry at a given position in this list.
   *
   * @param givenPosition An integer that indicates the position of the desired entry.
   * @return A reference to the indicated entry or null if the index is out of bounds.
   */
   public T getEntry(int givenPosition);
  
   /**
   * Displays the contents of the list to the console, in order.
   */
   public void display();
  
   /**
   * Determines the position in the list of a given entry.
   * If the entry appears more than once, the first index is returned.
   *
   * @param anEntry the object to search for in the list.
   * @return the first position the entry that was found or -1 if the object is not found.
   */
   public int indexOf(T anEntry);
  
   /**
   * Determines the position in the list of a given entry.
   * If the entry appears more than once, the last index is returned.
   *
   * @param anEntry the object to search for in the list.
   * @return the last position the entry that was found or -1 if the object is not found.
   */
   public int lastIndexOf(T anEntry);
  
   /**
   * Determines whether an entry is in the list.
   *
   * @param anEntry the object to search for in the list.
   * @return true if the list contains the entry, false otherwise
   */
   public boolean contains(T anEntry);

   /**
   * Gets the length of this list.
   *
   * @return The integer number of entries currently in the list.
   */
   public int size();

   /**
   * Checks whether this list is empty.
   *
   * @return True if the list is empty, or false if the list contains one or more elements.
   */
   public boolean isEmpty();
}

------------------------------------------------------------------------------------------------------------------------

********TESTING ISEMPTY AND EMPTY DISPLAY
Empty is true: true

Should display:
0 elements; capacity = 10
0 elements; capacity N/A        


********TESTING ADD TO FRONT
Should display:
1 elements; capacity = 10       [2]
1 elements; capacity N/A        [2]

Should display:
3 elements; capacity = 10       [3, 4, 2]
3 elements; capacity N/A        [3, 4, 2]

Empty is false: false


********TESTING CLEAR
Should display:
0 elements; capacity = 10
0 elements; capacity N/A        

********TESTING ADD TO BACK
Should display:
1 elements; capacity = 10       [7]
1 elements; capacity N/A        [7]

Should display:
3 elements; capacity = 10       [7, 10, 5]
3 elements; capacity N/A        [7, 10, 5]


********TESTING CONTAINS
Contains 5 true:  true
Contains 7 true:  true
Contains 4 false: false


********TESTING ADD WITH EXPANSION
Should display:
32 elements; capacity = 40      [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31]
32 elements; capacity N/A       [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31]


********TESTING INDEX OF
Index of 0  is  0: 0
Index of 31 is 31: 31
Index of -5 is -1: -1
Index of 32 is -1: -1
Index of 3  is  0: 0
Index of 5  is  6: 6


********TESTING LAST INDEX OF
Last index of 0  is  1:  1
Last index of 31 is 32: 32
Last index of -5 is -1: -1
Last index of 35 is -1: -1
Last index of 3  is  4:  4
Last index of 5  is  33: 33


********TESTING SIZE
Size is 34: 34


********TESTING GET ENTRY
Element in position 15 is 14: 14
Element in position  0 is  3: 3
Element in position 39 is null: null
Element in position -1 is null: null


********TESTING REMOVES
Remove front element 3: 3
Remove back element  5 :5
Remove front element 0: 0
Remove back element 31: 31

Should display:
30 elements; capacity = 40      [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30]
30 elements; capacity N/A       [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30]

Remove element null: null
Remove element null: null

Remove element 1: 1
Should display:
0 elements; capacity = 40
0 elements; capacity N/A        

Remove element 1: 1
Should display:
0 elements; capacity = 40
0 elements; capacity N/A        

Remove element 1: 1
Should display:
0 elements; capacity = 40
0 elements; capacity N/A        

Remove element 1: 1
Should display:
0 elements; capacity = 40
0 elements; capacity N/A        



********TESTING MIX OF ADDS AND REMOVES
Should display:
7 elements; capacity = 40       [5, 4, 3, 2, 3, 8, 9]
7 elements; capacity N/A        [5, 4, 3, 2, 3, 8, 9]

Should display:
5 elements; capacity = 40       [4, 3, 2, 3, 8]
5 elements; capacity N/A        [4, 3, 2, 3, 8]

********TESTING WITH STRINGS
Should display:
5 elements; capacity = 5        [You, did, it!, Nice, job!]
5 elements; capacity = 5        [You, did, it!, Nice, job!]

Contains "Nice" is true: true
Contains "You"  is true: true
Contains "you"  is false: false

Index of "it!" is 2: 2
Last index of "it!" is 2: 2

Consider the observations taken on the continuous random variable Y given in the table.

1. Graph the data using an appropriate plot. Comment on the key features of the graph.

2. Assess the normality of the data set. What do you conclude?

3. Compute the 5-number summary.

4. Treat the sample mean and sample standard deviation as if they are the true population mean and standard deviation. Find P(Y > 90).

5. Treat the sample mean and sample standard deviation as if they are the true population mean and standard deviation. With a sample size of n = 50, what is the sampling distribution of the sample average?

6. For a sample of size n = 50, find P(Y > ¯ 88.73).

Consider the observations taken on the continuous random variable Y given below.

1. Graph the data using an appropriate plot. Comment on the key features of the graph.
2. Assess the normality of the data set. What do you conclude?
3. Compute the 5-number summary.
4. Treat the sample mean and sample standard deviation as if they are the true population mean and standard deviation. Find P (Y > 90).
5. Treat the sample mean and sample standard deviation as if they are the true population mean and standard deviation. With a sample size of n = 50, what is the sampling distribution of the sample average?
6. For a sample of size n = 50, find P(Y  > 88.73).

The file Cereals contains the calories and sugar, in grams, in one serving of seven breakfast cereals:

Cereal                                                             Calories                             Sugar

Kellogg’s all Bran                                         80                                       6

Kellogg’s Corn Flakes                                  100                                     2

Wheaties                                                        100                                     4

Nature’s path Organic Multigrain Flakes 110                                     4

Kellogg’s rice Krispies                                 130                                     4

Post Shredded Wheat Vanilla almond       190                                     11

Kellogg’s Mini Wheats                                200                                     10

a. Compute and interpret the coefficient of correlation, r.

b. at the 0.05 level of significance, is there a significant linear relationship between calories and sugar?