Answer all

Part II. Molar Enthalpy of Dissolution of a Salt Mass of water 75.41g Mass of NH.NO, 3.02 19.2"C3. (9 points) Using your data from Part II, calculate the molar heat of dissolution of NH.NO, in kJ/mol. Calculate the % error compared to the value you obtained in question 2. Assume the specific heat of the solution is the same as pure water, 4.184 J/g C. Show work. 62. Write a program that uses parallel arrays to keep track of 5 courses. Each course will have a discipline code (like MTH or CS), a course number (use only integers), and a course title (like "Computer Science I"). There should be 5 functions: 1. intro ( ) - instructions about what is coming up 2. void fillCourses( ..... with parameters for the 3 arrays .... ) 3. int courseSearch( .... with parameter for the titles array and for a course title .... ) - the function returns -1 if the course title is not found; otherwise, it returns the element number of the array where the course title was found (There should be a prompt and input in the main() function, where the user enters a course title.) 4. void showCourses( .... with parameters for the 3 arrays ... ) 5. void showOneCourse( ... with parameters for the 3 arrays and for the element number of where the course searched for is found) - displays the discipline and course number of the course searched for. I SAMPLE RUNS:Part C: Exercise Your classmates were invited to complete a MATH 1P98 student survey. In this last part of the assignment, you will work with the results from that survey. Students were asked, "How many days in a week do you exercise for more than 20 minutes?". Students could choose to respond between 0 days to 7 days. See the Excel sheet "Assignment 3 - Survey" given in in the "Written Assignment 3" folder on Sakai for the responses. 4. (Submit a screenshot of your written or typed answer.) A fitness trainer is interested in finding out the true mean number of days that MATH 1P98 students exercise in a week. The trainer claims that the mean number of days in a week that MATH 1P98 students exercise for more than 20 minutes is 3.5 days. Test this claim at the 0.05 level of significance. a. State the null and alternative hypotheses. Indicate the significance level. b. Identify the test statistic you will use. Are the requirements needed to use that test statistic satisfied? Explain. (Hint: How do you decide between using z or t? Check if the data follows a normal distribution and/or sample size.) c. Use Excel to obtain any sample statistics necessary to calculate the test statistic. (You do not need to submit the Excel sheet.) Then, calculate the test statistic by hand. Show your work. d. Use the Brock Excel calculator to check your answer for part c. Submit a screenshot of that sheet, including all input values and output results. e. Write the critical value(s) used for this test. Compare your test statistic to explain whether or not the null hypothesis is rejected. f. Write a concluding statement that addresses the fitness trainer's claim. 5. (Submit a screenshot of your written or typed answer.) A fitness trainer is interested in finding out if there is a difference between the mean number of days that female MATH 1P98 students exercise and the mean number of days that male 3 MATH 1P98 students exercise. When completing the survey, respondents could self-identify their gender. Students without a response in the Gender column either preferred not to answer or self-identified differently from "female" or "male". Because the focus of this study is interested in comparing exercise days between female and male students, we will only consider the exercise data available for the n, = 185 students who identified as female and the n2 = 236 students who identified as male.The schema of the database is provided below (keys are in bold, field types are omitted): . student (sid, sname, sex, age, year, gpa) . dept(dname, numphds) . prof(pname, dname) course (cno, cname, dname) major (dname, sid) section (dname, cno, sectno, pname) . enroll(sid, grade, dname, cno, sectno) Before you start writing SQL, it is a good idea to take a look at the database and familiarize yourself with its contents. Dataset can be downloaded here: project data.7z If you have problems in extract the zipped file, here are the unzipped dataset files (7 files in total) course.txt dept.txt enroll.txt major.txt prof.txt section.txt student.txt SQL Questions