short STAT project

Anonymous
timer Asked: Nov 14th, 2018
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Question description

Hi ,

I need help with my statistic project , their is 20 question you should answer , you should use the score of my exam 1 and 2 to solve the problems .

my exam 1 score is 73

my exam 2 score is 32

all the other info in the PDF , thank you in advance

FALL 2018 STA PROJECT YOU WILL USE YOUR EXAM-1 and EXAM-2 SCORES FOR DOING THIS PROJECT. MAINTAIN TWO DECIMAL PLACES FOR YOUR ANSWERS. READ THE QUESTIONS THOROUGHLY AND THEN ATTEMPT TO SOLVE THEM. REMEMBER: YOU WILL USE YOUR EXAM-1 and EXAM-2 SCORES FOR DOING THIS PROJECT. Note: If you have an exam score in decimals, say 101.5, round it up to 102; if you got a score of 96.5, round it up to 97, etc. Fall 2018 P a g e |1 Consider these 11 data points [include your exam-1 and exam-2 scores to these 9 points]: 105, 91, 52, 86, 100, 96, 98, 109, 96, (YOUR Exam-1 SCORE HERE), (YOUR Exam-2 SCORE HERE). Please include your EXAM-1 score and EXAM-2 score to these 9 scores and make it a total count of 11 points. In the below table, we have scores of 9 students falling in their respective Grade. YOU MUST ADD YOUR EXAM-1 and EXAM-2 SCORES TO THIS GRADE FREQUENCIES TO GET TOTAL COUNT AS 11. Grade scale is: A for ≥ 90; B for ≥ 80 and < 90; C for ≥ 70 and < 80; D for ≥ 60 and < 70; F for < 60. Grade Frequency For questions, 1-5, AFTER completing the table with your A 7 grades of exam-1 and exam-2 scores, answer Q1-Q5. B 1 *Note: If you have an exam score in decimals, say 101.5, round it up to 102; if you got a score of 96.5, round it up to 97, etc. C D F Total 0 0 1 11 EXAM-1 SCORE: EXAM-2 SCORE: Q1. If we chose a student at random, what is the probability that student received grade-D? Q2. If C or above is considered as a pass grade, and if we chose a student at random, what is the probability that the student received a pass grade? Q3. What is the probability that the student selected at random got a fail grade? Q4. What is the probability that the student selected at random got a B or A grade? Q5. Is Q4 considered as mutually exclusive case? Fall 2018 P a g e |2 FALL 2018 STA PROJECT For answering these below Q6-Q20 questions, please use these 11 listed values: 105, 91, 52, 86, 100, 96, 98, 109, 96, (YOUR Exam-1 SCORE HERE), (YOUR Exam-2 SCORE HERE) Q6. What is the sample size you have? Q7. What is the sample range of these 11 data points? Q8. What is the first (lower) Quartile of these 11 data points? Q9. What is the second Quartile of these 11 data points? Q10. What is the third (upper) Quartile of these 11 data points? Q11. What is the Inter-Quartile Range? Q12. What is the median of these 11 data points? Q13. What is the rough shape of these data? Use comparison of mean and median to answer this: Q14. What is the probability that a randomly chosen number among these 11 data points is between 95 and 100, exclusive of the ends? Q15. What is the probability that a randomly chosen number among these 11 data points is not a multiple of 5? Q16. What is the probability that a randomly chosen number among these 11 data points is an even number given that it is multiple of 4? Q17. What is the 15% Trimmed mean of these 11 data points? Q18. What is the sample mean of these 11 data points? Q19. What is the sample standard deviation of these 11 data points? Q20. What is the sample variance of these 11 data points? Fall 2018 P a g e |3

Tutor Answer

uoscar
School: Rice University

The solution is attached.I also attached another word file containing the detailed steps of arriving at the solution.Please, give me feedback.

FALL 2018

STA PROJECT
YOU WILL USE YOUR EXAM-1 and EXAM-2 SCORES FOR DOING THIS PROJECT.

MAINTAIN TWO DECIMAL PLACES FOR YOUR ANSWERS.
READ THE QUESTIONS THOROUGHLY AND THEN ATTEMPT TO SOLVE THEM.
REMEMBER: YOU WILL USE YOUR EXAM-1 and EXAM-2 SCORES FOR DOING THIS PROJECT.
Note: If you have an exam score in decimals, say 101.5, round it up to 102; if you
got a score of 96.5, round it up to 97, etc.

Fall 2018

P a g e |1

Consider these 11 data points [include your exam-1 and exam-2 scores to these
9 points]: 105, 91, 52, 86, 100, 96, 98, 109, 96, (YOUR Exam-1 SCORE HERE),
(YOUR Exam-2 SCORE HERE). Please include your EXAM-1 score and EXAM-2 score to
these 9 scores and make it a total count of 11 points.
In the below table, we have scores of 9 students falling in their respective
Grade. YOU MUST ADD YOUR EXAM-1 and EXAM-2 SCORES TO THIS GRADE
FREQUENCIES TO GET TOTAL COUNT AS 11.
Grade scale is: A for ≥ 90; B f...

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