Homework Answers
as we know that z score=1 corresponds to 84th percentile which means Bob has done better then 84 % of the class and not 90 5 of the class hence correct answer is b. No
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Bob's z-score for the last exam was z-1.0 in Professor Marge Innovera's statistics class. Bob said,...
Bobs ascots for the last exam was z=1.0 In professor Marge Innoveras statistics class. bob said...
Bobs ascots for the last exam was
z=1.0 In professor Marge Innoveras statistics class. bob said
“oh,good, I did better than 90% of the class.”
Bob's z-score for the last exam was z = 1.0 in Professor Marge Innovera's statistics class. Bob said, "Oh, good, I did better than 90% of the class." Assuming a normal distribution of scores, is Bob right? Select one: a, Yes b. No c. Need to know the sample size to answer this. on red...
Statistics Question... (10 pts) If the mean exam score of a class was 75%, with a...
Statistics Question...
(10 pts) If the mean exam score of a class was 75%, with a standard deviation of 15%, what percent of students would be expected score at or higher than 92%? Assume that the distribution of the scores is normal and the variable is random 7.
Suppose your statistics professor reports test grades as z-scores, and you got a score of 1.79...
Suppose your statistics professor reports test grades as z-scores, and you got a score of 1.79 on an exam. a) Write a sentence explaining what that means b) Your friend got a z-score of-1. If the grades satisty the Nearty Normal Condition, about what percent of the class scored lower than your fiend? a) Choose the corredt answer belaw O A. The score was 1.79 points lower than the mean score in the ciass O B. The score was 1.79...
show all steps, thanks 3.2.21. A professor in a large statistics class has a grading policy...
show all steps, thanks
3.2.21. A professor in a large statistics class has a grading policy such that only the 15% of the students with the highest scores will receive the grade A. The mean score for this class is 72 with a standard deviation of 6. Assuming that all the grades for this class follow a normal probability distribution, what is the minimum score that a student in this class has to get to receive an A grade?
Question: A professor recorded three statistics exam scores and other variables for 20 students in her...
Question: A professor recorded three statistics exam scores and other variables for 20 students in her statistics course. There are seven variables in this data set: (1) ID number, (2) Sex, (3) Study Place, and (4) Hours of Work, (5) Exam 1 score, (6) Exam 2 score, and (7) Exam 3 score. · Sex (1 = Males, 2 = Females) · Study_Place ("Where do you study the most frequently for this class?" 1 = My room, 2 = Library, 3 = Coffee shops,...
The average final exam score for the statistics course is 74%. A professor wants to see...
The average final exam score for the statistics course is 74%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is different. The final exam scores for the 16 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 95, 87, 86, 87, 72, 69, 70, 99, 78, 78, 91, 69, 72, 73, 61,...
The average final exam score for the statistics course is 76%. A professor wants to see...
The average final exam score for the statistics course is 76%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is different. The final exam scores for the 13 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 74, 88, 68,95, 84, 83, 70, 97, 66, 82, 67, 67, 86 What can be...
The average final exam score for the statistics course is 75%. A professor wants to see...
The average final exam score for the statistics course is 75%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is higher. The final exam scores for the 16 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 82, 73, 89, 67, 89, 74, 98, 68, 73, 65, 97, 77, 74, 76, 73,...
The average final exam score for the statistics course is 77%. A professor wants to see...
The average final exam score for the statistics course is 77%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is lower. The final exam scores for the 12 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 79.65, 57. 72. 84. 54,60,69.69.85,58,79 What can be concluded at the the a = 0.05...
The average final exam score for the statistics course is 82%. A professor wants to see...
The average final exam score for the statistics course is 82%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is higher. The final exam scores for the 13 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 89, 96, 70, 93, 95, 89, 100, 93, 71, 80, 91, 100, 75 What can...
Bobs ascots for the last exam was
z=1.0 In professor Marge Innoveras statistics class. bob said
“oh,good, I did better than 90% of the class.”
Bob's z-score for the last exam was z = 1.0 in Professor Marge Innovera's statistics class. Bob said, "Oh, good, I did better than 90% of the class." Assuming a normal distribution of scores, is Bob right? Select one: a, Yes b. No c. Need to know the sample size to answer this. on red...
Statistics Question...
(10 pts) If the mean exam score of a class was 75%, with a standard deviation of 15%, what percent of students would be expected score at or higher than 92%? Assume that the distribution of the scores is normal and the variable is random 7.
Suppose your statistics professor reports test grades as z-scores, and you got a score of 1.79 on an exam. a) Write a sentence explaining what that means b) Your friend got a z-score of-1. If the grades satisty the Nearty Normal Condition, about what percent of the class scored lower than your fiend? a) Choose the corredt answer belaw O A. The score was 1.79 points lower than the mean score in the ciass O B. The score was 1.79...
show all steps, thanks
3.2.21. A professor in a large statistics class has a grading policy such that only the 15% of the students with the highest scores will receive the grade A. The mean score for this class is 72 with a standard deviation of 6. Assuming that all the grades for this class follow a normal probability distribution, what is the minimum score that a student in this class has to get to receive an A grade?
The average final exam score for the statistics course is 74%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is different. The final exam scores for the 16 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 95, 87, 86, 87, 72, 69, 70, 99, 78, 78, 91, 69, 72, 73, 61,...
The average final exam score for the statistics course is 76%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is different. The final exam scores for the 13 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 74, 88, 68,95, 84, 83, 70, 97, 66, 82, 67, 67, 86 What can be...
The average final exam score for the statistics course is 75%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is higher. The final exam scores for the 16 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 82, 73, 89, 67, 89, 74, 98, 68, 73, 65, 97, 77, 74, 76, 73,...
The average final exam score for the statistics course is 77%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is lower. The final exam scores for the 12 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 79.65, 57. 72. 84. 54,60,69.69.85,58,79 What can be concluded at the the a = 0.05...
The average final exam score for the statistics course is 82%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is higher. The final exam scores for the 13 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 89, 96, 70, 93, 95, 89, 100, 93, 71, 80, 91, 100, 75 What can...
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