AJAX: Forms in this HW are dealt with AJAX. Suppose a teacher needs to fill data related to his/her courses, in terms of course name and number of students in each course. The problem that the number of these courses vary each semester. Design a simple form that has only one text box and a submit button. The text box represents number (call it n, for example) of courses a teacher needs to teach in a semester. When the teacher clicks submit, another form appears that contains set of text boxes equals to the number n. These text boxes represented by (course name, and number of its students: each of which in a separate text box). When the teacher fills the data in the form and clicks on submit, he/she will get the following data: 1- Average of Numbers of students 2- Standard Deviation. 3- The Mode. 4- The Median. 5- Draws a histogram for the numbers in vertical position.