Part (V) to (Viii) An accounting class of 250 students is allocated into several tutorials to...
An accounting class of 250 students is allocated into several tutorials to be taken by either Tutor A and Tutor B. At the end of the semester the lecturer-in-charge looks at the distribution of marks by tutor. Table 1 provides this summary of the marks Table 1: Accounting student results according to their tutor Fail Credit Distinction Higher distinction 1 4 Pass Total Tutor A Tutor B Total 13 12 25 59 71 130 26 39 65 6 19 25...
5. North Carolina State University posts the complete grade distributions for its courses online. The distribution of grades for all students in all sections of Accounting 210 in the spring semester of 2001 was Grade Probability .18 32 34 09 07 a. Using the scale A -4, B-3, C-2, D- 1, and F 0, let Xbe the grade of a randomly chosen b. Let X denote the mean grade for a random sample of 50 students from Accounting 210. Since...
The professor of a introductory calculus class has stated that, historically, the distribution of final exam grades in the course resemble a Normal distribution with a mean final exam mark of μ=63μ=63% and a standard deviation of σ=9σ=9%. If using/finding zz-values, use three decimals. (a) What is the probability that a random chosen final exam mark in this course will be at least 73%? Answer to four decimals. (b) In order to pass this course, a student must have a...
Part (V) to (Vii) A large number of people worldwide take the GMAT exam each year as they apply for MBA programs. Administrators of the test suggest that from past experience the distribution of GMAT exam scores is closely approximated by a normal distribution with mean 1F525 and standard deviation ơ-100 (i)Assuming the population distribution of GMAT exam scores is normal, what is the probability that a person randomly drawn from those taking the test would have a test score...
2. This week, we studied the test score Y versus number of hours, X, spent on test preparation, of a student in a French class of 10 students with the collected results shown below Number of hours studied Test score 31 10 14 73 37 12 60 91 21 84 17 (a) Use linear normal regression analysis method or the least-squares approximation method to predict the average test score of a student who studied 12 hours for the test (b)...
Two professors at a local college developed a new teaching curriculum designed to increase students' grades in math classes. In a typical developmental math course, 48% of the students complete the course with a letter grade of A, B, or C. In the experimental course, of the 17 students enrolled, 11 completed the course with a letter grade of A, B, or C. Is the experimental course effective at the a=0.1 level of significance? Complete parts (a) through (g). Because...
In a History with multiple (4) choice questions, a correct answer gives one point while there is a 1/4 of the point penalty for a wrong answer. Having no time to answer the last ten questions, a student decides to mark them randomly. What do you expect? Select one: a. He neither gains nor loses any points b. He loses some points c. He gains some points d. Cannot be answered with the given information If the mean of a...