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![Here, we have mean = u=75 SD=0=10 X~ N(M= 75, 8=10) Now, we have to find a such that x is minimum score to top si. i P[x7x] =](http://img.homeworklib.com/questions/551ba0b0-7027-11ea-b8de-0d033a931a7a.png?x-oss-process=image/resize,w_560)
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2. A teacher told his students that those who score in the top 5% of the...
A teacher gives 5 students a multiple choice test, in which each problem is worth 1...
A teacher gives 5 students a multiple choice test, in which each problem is worth 1 point. The median and mean scores turn out to be 9 and 10 points, respectively. What is the minimum possible top score? What is the maximum possible top score? What is the minimum possible standard deviation? What is the maximum possible standard deviation?
A teacher informs his organic chemistry class (of 500+ students) that a test was very difficult,...
A teacher informs his organic chemistry class (of 500+ students) that a test was very difficult, but the grades would be curved. Scores on the test were normally distributed with a mean of 33 and a standard deviation of 8.7. The maximum possible score on the test was 100 points. Because of partial credit, scores were recorded with 1 decimal point accuracy. (Thus, a student could earn a 33.2, but not a 32.73.) The grades are curved according to the...
A teacher sets a test for a class of students. The teacher decides to analyse the...
A teacher sets a test for a class of students. The teacher decides to analyse the test results using statistical analysis techniques. Given the table of results below, complete the following tasks: CLASS RESULTS STUDENTS TEST SCORE% Thomas 74 Charles 55 Sarah 81 Mathew 68 James 71 Jessica 74 Daniel 86 Jack 66 Emma 73 Laura 72 Joshua 84 Alice 68 Samantha 70 a). Calculate the Mean of the test scores. b). Calculate the Median of the test scores. c)....
A teacher sets a test for a class of students. The teacher decides to analyze the...
A teacher sets a test for a class of students. The teacher decides to analyze the test results using statistical analysis techniques. Given the table of results below, complete the following tasks: CLASS RESULTS Student Test Score (%) Thomas 74 Charles 55 Sarah 81 Mathew 68 James 71 Jessica 74 Daniel 86 Jack 66 Emma 73 Laura 72 Joshua 84 Alice 68 Samantha 70 a). Calculate the Mean of the test scores. b). Calculate the Median of the test scores....
This year the test scores of all students in a college algebra course is normally distributed...
This year the test scores of all students in a college algebra course is normally distributed with a mean of 75 and a standard deviation of 10. Only the best 5% of the students will receive an A. What is the minimum score a student must obtain to get an A?
THINKING/COMMUNICATION 7. A post-secondary class has 600 students. The mean grade on their midterm exam is...
THINKING/COMMUNICATION 7. A post-secondary class has 600 students. The mean grade on their midterm exam is 70%, with a standard deviation of 15. a. Find the Z-score of a student who scored 80% on his exam. [2 marks] b. Find the percentage of students who failed the exam. [3 marks] c. How many students failed the exam (i.e. scored less than 49%)? [1 mark] d. Your friend claims he scored in the 99th percentile on his exam. What mark must...
An elite graduate program requires an aptitude test and considers only those applicants who score in...
An elite graduate program requires an aptitude test and considers only those applicants who score in the top 3%. The test has a mean of 400 and a standard deviation of 100. (4 marks) What Z score must be achieved? What T score must be achieved? What raw score must be achieved?
Computing Z scores A teacher wanted to know how well the gifted students in here class...
Computing Z scores A teacher wanted to know how well the gifted students in here class perform relative to her other classes. She administers a standardized test with a mean of 50 and standard deviation of 10. Her class of 31 students has an average score of 55, what percent of classes is their average score higher than? 2. A researcher wanted to study the effects of mentoring on intelligence scores. He wanted to know as a baseline what the...
in java by using the loop Write a program that finds all students who score the...
in java by using the loop Write a program that finds all students who score the highest and lowest average marks of the first two homework in CS (I). Your program should read the data from a file called "hw2.dat" and displays the output to another file called “hw2.out” and on the screen. The first line of the input file contains the number of students, N. The next N lines contain information about the students. Each data line contains student...
A teacher gives a test to a large group of students. The results are closely approximated...
A teacher gives a test to a large group of students. The results are closely approximated by a normal curve. The mean is 73,with a standard deviation of 7. The teacher wishes to give A's to the top 5.5% of the students and F's to the bottom 5.5%. A grade of B is given to the next 16.4%, with D's given similarly. All other students get C's. Find the bottom cutoff for a grade of A. The bottom cutoff for...
A teacher sets a test for a class of students. The teacher decides to analyze the test results using statistical analysis techniques. Given the table of results below, complete the following tasks: CLASS RESULTS Student Test Score (%) Thomas 74 Charles 55 Sarah 81 Mathew 68 James 71 Jessica 74 Daniel 86 Jack 66 Emma 73 Laura 72 Joshua 84 Alice 68 Samantha 70 a). Calculate the Mean of the test scores. b). Calculate the Median of the test scores....
THINKING/COMMUNICATION 7. A post-secondary class has 600 students. The mean grade on their midterm exam is 70%, with a standard deviation of 15. a. Find the Z-score of a student who scored 80% on his exam. [2 marks] b. Find the percentage of students who failed the exam. [3 marks] c. How many students failed the exam (i.e. scored less than 49%)? [1 mark] d. Your friend claims he scored in the 99th percentile on his exam. What mark must...
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